Product Description
PRC LS3 As-Cast 257cc Rectangle Port LS Cylinder Heads
Fits 2007-Newer Rectangle Port LS-Based 6.0L and 6.2L Engines
LS3 L99 LSA LS9 L92 L9H L94 L96 L76 L77 LY6
These 100% USA-cast and machined Precision Race Components cylinder heads combine high flowing "As-cast" runners with CNC machined chambers and guides for exceptional performance at a bargain price! Designed for 4.000" and larger bore engines using factory LS3 or aftermarket Rectangle Port intake manifolds. This PRC as-cast intake port has been flow bench tested to flow 369 CFM & can support everything from smaller camshaft street engines up to all-out Boosted/Nitrous combinations and strokers. These are 6 bolt castings to fit aftermarket blocks but work great on factory 4-bolt blocks as well with no interference. These castings are designed to work with factory style rocker arms and covers for convenience and cost savings compared to some other options on the market. These heads will also fit LS2 LQ4 and LQ9 blocks when used with a rectangle port intake manifold and LS3 style rocker arms.
Features:
- Fits 4.000" and larger bores
- As-Cast 257cc Intake Runners
- 68cc CNC Machined Chambers
- 6 Bolt Pattern - Can also be used on Factory 4 Bolt Blocks.
- 2.170" Lightweight Hollow Stem Intake Valves, 1.600" Stainless Exhaust Valves
- Includes TSP .660 Spring Kit w/ PAC Valve Springs & Titanium Retainers
- Factory Rocker Friendly!
- Extra Thick Deck Surface for Power Adders
- Made in the USA
- Sold/Priced as a Pair
NOTE: Due to the size/weight of this item, there will be additional shipping charges for orders outside of the continental United States. Please contact us at customerservice@michiganmotorsports.com for a shipping quote.
