Product Description
PRC LS3 260cc CNC Rectangle Port Cylinder Heads
Fits 2007-Newer Rectangle Port LS-Based 6.2L Engines LS3 L99 LSA LS9 L92 L9H L94
These 100% USA-cast and machined Precision Race Components cylinder heads feature 260cc fully CNC Ported intake runners and a 13* valve angle, making them the highest flowing rectangle port heads in the PRC lineup. This is the go-to head for high-RPM stock bottom end builds and large displacement stroker engines. All PRC cylinder heads are extensively researched and tested during the development phase, resulting in a head that flows considerably more than a ported GM casting while still keeping the port sizes small for improved velocity, resulting in broad powerbands and excellent drivability. The 13-degree valve angle provides additional piston to valve clearance, allowing for larger camshafts on stock bottom end builds, as well as making room for higher compression domed pistons on max-effort naturally aspirated combinations. The extra-thick deck surfaces help alleviate head gasket sealing issues in boosted and nitrous applications. These are 6 bolt castings to fit aftermarket blocks but work great on factory 4-bolt blocks as well with no interference. 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
- 260cc CNC Machined Intake Runners
- 68cc CNC Machined Combustion Chambers
- 13-Degree Valve Angle for improved flow and increased piston to valve clearance
- 2.185" Lightweight Hollow Stem Intake Valves, Stainless Steel 1.60" Exhaust Valves
- Integrated Rocker Pedestals accept factory style LS3 Rocker Arms.
- Includes TSP .660 Spring Kit w/ PAC Valve Springs & Titanium Retainers
- CHE Bronze Guides
- 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.
