Quick view Details Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare
Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $2,799.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $2,799.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $2,799.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG MSRP: Now: $249.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $2,799.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $2,799.96 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,199.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare
Quick view Frankenstein Engine Dynamics Frankenstein Billet Aluminum Rocker Stands for M311 Heads - Black Anodized Frankenstein Engine Dynamics Billet Rocker Stand for M311 Heads For use with Frankenstein M311 Heads Only. Will not work with OEM or other aftermarket heads. Select Quantity for a Single (1) Or... MSRP: Was: Now: $65.00 - $130.00 Choose Options Compare
Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Black Anodized - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Black Anodized Finish Upgrade your engine bay with a Frankenstein Billet Valley... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Frankenstein Engine Dynamics Frankenstein Gen 3 LS Billet Valley Cover Tray - Machined Finish - LS1 LS6 LQ4 LQ9 LR4 LM7 L59 LM4 L33 Frankenstein Engine Dynamics Gen 3 LS Billet Valley Cover Fits 1997-2006 Gen 3 LS-Based Engines 4.8L 5.3L 5.7L 6.0L Bare Machined Aluminum Finish Upgrade your engine bay with a Frankenstein Billet... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray - Machined Finish - LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Bare Machined Aluminum Finish Upgrade your engine bay with the Frankenstein... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Frankenstein Engine Dynamics Frankenstein Gen 4 LS Billet Valley Cover Tray -Black Anodized- LS3 L92 LS2 L96 LC9 LY6 LH6 LSA L76 LMG Frankenstein Engine Dynamics Gen 4 LS Billet Valley Cover Fits Gen 4 LS-Based Engines 4.8L 5.3L 6.0L 6.2L 7.0L Black Anodized Finish Upgrade your engine bay with the Frankenstein Engine... MSRP: Now: $249.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected × OK
Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets Currently accepting pre-orders. Expected... MSRP: Now: $2,799.96 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected
Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $2,999.96 - $3,129.96 Choose Options Compare
Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold Currently accepting pre-orders... MSRP: Now: $3,199.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Compare Selected
Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare
