Precision Race Components Aftermarket Casting 6-Bolt 285cc Fully CNC Ported LS7 Heads Assembled in the USA; Kit Also Includes TSP Hardened Pushrods & Your Choice Of Camshaft!
When selecting your camshaft, please keep in mind that the LS7 rocker arm ratio is 1.8:1 and NOT 1.7:1 like all of the other LS-based engines! All of our LS7 camshafts are listed with the 1.8:1 rocker ratio.
All of the optional Cloyes timing sets are built for a three-bolt cam core and are specific to the LS7/LS9 dry-sump oiling system. If you select a Cloyes timing set, be sure that you also select a three-bolt cam core!
**You must have a minimum of a 4.125" bore size to run these cylinder heads!**
2.245" Titanium Intake Valve / 1.610" Stainless Exhaust Valve
TSP .660 Spring Kit w/ PAC Valve Springs & Titanium Retainers
6-Bolt Cylinder Heads with Thicker Deck Surface
CHE Bronze Guides
Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
Completely Assembled in the USA
Extensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 53 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow! The 285cc runner is recommended for higher HP applications with a minimum bore size of 4.125".
Cylinder Head Specs:
Valve Angle: 12 Degree
Intake CC: 285cc
Intake Valve: 2.245"
Exhaust Valve:1.610"
Chamber Size: 70cc
**Valve spring lift ratings are based on using titanium intake valves.
