Product Description
PRC 225cc As-Cast Cathedral Port Big Chamber LS Heads
Fits 1997-2013 LS-Based Engines 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9
These 100% USA-cast and machined Precision Race Components cylinder heads combine high flowing 225cc "As-cast" intake runners with CNC machined chambers and guides for exceptional performance at a bargain price. These are idea for 5.7L-6.0L engines with cathedral port intake manifolds. Extra-thick deck surfaces help alleviate head gasket sealing issues in power-adder applications. This 68cc chamber version is a great head for Boosted applications. The new 225cc port has been flow bench tested to over 320cfm and will benefit everything from small camshaft street engines all the way up to all-out turbocharged race engines. This is the perfect option when wanting an aftermarket casting that will retain the use of existing components including the stock rocker arms. These are 6 bolt castings to fit aftermarket blocks but work great on factory 4-bolt blocks as well with no interference.
Features:
- Fits 3.898" and larger bores
- 225cc As-Cast Intake Runners
- 68cc CNC Machined Combustion Chambers
- Includes TSP .660 Spring Kit w/ PAC Valve Springs & Titanium Retainers
- CHE Bronze Guides
- 2.065" Lightweight Hollow Stem Intake Valves, 1.600" Stainless Exhaust Valves
- 6 bolt pattern: Can be used on Aftermarket 6 bolt blocks or Factory 4 bolt blocks
- Compatible with Factory Style LS1 Rocker Arms and Stands
- Extra Thick Deck Surfaces For Power Adders
- Made in the USA
- Sold/Priced as a pair
