Name: Precision Race Components LS3 As-Cast 6-Bolt Aftermarket Casting Heads & Cam Package
Brand: Precision Race Components
SKU: PRC-PKGLS3AC

Precision Race Components all new LS3 as-cast cylinder heads completed with CNC machined chambers & valve guides. For LS3/L99/L92/LSA/LS9 applications requiring a high flow aftermarket cylinder head at a competitive price!

Click Here to SEE why we build better heads!

MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!

As-Cast 257cc Intake Runners With CNC Machined Chambers & Valve Guides For Unmatched Flow!
68cc CNC Machined Chambers as Standard
Thicker Deck Surface Makes Them Ideal For Power-Adder Applications
2.17" Hollow Stem Intake Valves / 1.600" Stainless Exhaust Valves
Utilizes Factory Rocker Arms
TSP .660 Dual Spring Kit w/ PAC w/ Titanium Retainers

The all new PRC LS3 As-Cast cylinder heads are now available for customers looking for the ultimate as-cast LS3 cylinder heads available. The new PRC as-cast intake port has been flow bench tested to flow 369 CFM & can support everything from smaller camshaft street engines all the way to all out race engines. The cylinder heads will come standard with 68cc chambers, and we can mill them as small as 64cc while still retaining better than factory piston-to-valve clearance! We can mill additionally to get to your desired chamber size for no additional charge!

Flow Data (4.00" Flow Plate - No Exhaust Pipe):

LIFT	INTAKE FLOW	EXHAUST FLOW

.200"	153 CFM	114 CFM
.300"	233 CFM	163 CFM
.400"	287 CFM	191 CFM
.500"	329 CFM	214 CFM
.600"	357 CFM	228 CFM
.650"	369 CFM	233 CFM

**You must have a minimum of a 4.00" bore size to run these cylinder heads!**

***If you purchase a Melling oil pump you MUST use a single-roller timing set! The Melling oil pump will not clear a double-roller timing set!***