Precision Race Components Aftermarket LS3 As-Cast Cylinder Heads
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MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
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As-Cast 257cc Intake Runners With CNC Machined Chambers & Valve Guides For Unmatched Flow!
- 68cc CNC Machined Chambers
- Thicker Deck Surface Makes Them Ideal For Power-Adder Applications
- Relocated valves with 13° Valve Angles
- 2.170" Hollow Stem Stainless Intake Valves / 1.600" Stainless Exhaust Valves
- Utilizes Factory Rocker Arms
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TSP .660 Spring Kit w/ PAC Valve Springs & 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.
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 |
Processing & Shipping Overview
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Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.
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