PRC 227cc CNC Ported Small Bore 3.9"-4" Cylinder Heads
10-16-2016, 02:03 PM
#1
PRC 227cc CNC Ported Small Bore 3.9"-4" Cylinder Heads Category: Accessories
Price: $1800
Part Fits: 2010+ Camaro, 93-02 Chevrolet Camaro, 93-02 Pontiac Firebird, Corvette, 04-06 Pontiac GTO, 04+ Cadillac CTS-V, 67-92 Chevrolet Camaro, 67-92 Pontiac Firebird, Front wheel drive vehicles
Location (State): PA
Item Condition: Brand New
Shipping Information: Item Can be Shipped
Engine: LS2/LS3/LS7/L92/LS9, LS1/LS6
LS Engine?: Fits LS Engine
These heads are used and were ran for only 500 miles. These heads come fully assembled with 227cc Fully CNC Ported Intake Runners
84cc Fully CNC Ported Exhaust Runners
DESIGNED FOR 3.9"-4" BORE APPLICATIONS
TSP Spring Kit w/ PAC Valve Springs Rated To .660" Lift
62cc CNC Machined Chambers
2.065" Intake / 1.600" Stainless Valves
Tsp 7.5 pushrods.
Copied and pasted from tsp website.
Return Policy Fits
Precision Race Components all new cylinder head castings completed with 227cc runners. For stock cubic inch LS1/LS2 applications requiring smaller chambers for extra compression
Click Here to SEE why we build better heads!
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
Features:
***NOW AVAILABLE WITH HOLLOW STEM INTAKE VALVES!!!***
Factory Rocker Friendly!!*
The all new 227cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. Now is your chance to own the same cylinder head that currently holds the fastest stock bottom end heads / cam record! The new 227cc port has been flow bench tested to flow over 320cfm & can support everything from smaller camshaft street engines all the way to all our race engines. This cylinder head is a combination of a max effort high flowing port combined with a smaller chamber designed for max power in stock cube applications.
This cylinder head was used on the Texas Speed 98 Camaro when it lowered the heads cam stock bottom end 1/4 mile record to 9.66!!
Flow Data:
4.00" Flow Plate - No Exhaust Pipe
LIFT INTAKE FLOW EXHAUST FLOW
.100" 68 CFM 56 CFM
.200" 145 CFM 115 CFM
.300" 214 CFM 167 CFM
.400" 261 CFM 202 CFM
.500" 300 CFM 219 CFM
.600" 322 CFM 238 CFM
.650" 330 CFM 236 CFM
Stock rocker arms will cause increased guide wear in applications over .600" lift. Roller rockers can help to reduce this wear.
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10-17-2016, 09:27 AM
#8
they weren't milled. They came right from tsp like they are. These are the tsp casting that are cncd by tsp. The cam that was used was magic stick 4. Only drove the car for 500miles and only had a street tune never dynoed it. I got a deal on a turbo setup. Switch the car over to a 408 with ls3 heads. Could have kept these heads but decided to go with the ls3 style heads instead.
