- Home
- Featured Items
- PRC, 227CC CNC PORTED SMALL BORE 3.9"-4" CYLINDER HEADS, LS1/LS2
PRC, 227CC CNC PORTED SMALL BORE 3.9"-4" CYLINDER HEADS, LS1/LS2
Description:
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.
Features:
- 227cc Fully CNC Ported Intake Runners
- 84cc Fully CNC Ported Exhaust Runners
- Small Bore Chambers For Increased Horsepower & Torque+ SPECIFICALLY 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 ***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
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.
Other fine products
Collections
- 04-06 PONTIAC GTO LSA Supercharger Kits
- 1998-02 FBODY LSA Supercharger Kit
- 2004-07 CADILLAC CTSV LSA Supercharger Kits
- 2006-2009 Trailblazer SS LSA Supercharger Kits
- 2009-09 Pontiac G8 LSA Supercharger kits
- 2009-15 Cadillac CTS-V CAI
- 2010-15 Camaro SS Supercharger kits
- 2014-17 Chevrolet SS LSA Supercharger Kits
- 2020+ C8 Corvette Cold Air intakes
- 99-2014 GM Truck LSA Conversion KITS
- Apparel and Merch
- Auxiliary Fuel Pumps
- C5/C6 CORVETTE LSA SUPERCHARGER KITS
- C8 2020+ Corvette Brake Parts/Packages
- C8 2020+Corvette DriveTrain
- C8 2020+Corvette Exhaust
- C8 Corvette Aero/Exterior Packages
- C8 Corvette Forced Induction kits
- C8 Corvette Maintenance Packages/Parts
- C8 Corvette Suspenion and Lowering packages
- C8 Corvette Wheels 2020+
- CAMSHAFT KITS
- Chevrolet Performance Connect and Cruise Engine+Trans Packages
- Clutch Kits
- CTS-V Gen 2 Pulley kits
- CTS-V Gen 2 Exhaust
- Exhaust
- Fbody Intake
- Featured Items
- Flex Fuel Kits
- G8 Exhaust
- GAUGES
- GM Performance Accessory Belt Drive Systems
- GTO Drivetrain
- GTO Engine Cooling
- GTO Exhaust
- GTO Intakes
- GTO Suspension
- Home page
- INJECTORS
- Long Blocks
- Lower Pullies
- LS Camshafts
- LS Engine Heads
- LS/LT Lifters
- LSA 2650 Full Supercharger Kits
- LSA Supercharger Parts
- LSA Swap Belt Drive Parts
- LSA/LS9 TVS Supercharger Rebuild Kits
- LSx HEAD FASTENERS
- Misc Fueling Parts
- OEM GM Gen V LT Parts
- Popular Picks
- Rocker Arm/Trunnion Kits
- SS Fuel parts
- Supercharger Cooling
- Transmissions
- TUNING SOFTWARE
- Universal Fuel Pumps
- Upper Pullies
Product Types
- Unknown Type
- 5thGen Camaro Exhaust
- AdMerchandise
- C8 Brakes
- c8 DriveTrain
- C8 Exhaust
- C8 Forced Induction
- C8 Intake
- c8 Maintenance
- C8 Suspension
- c8 wheels
- c8Exterior
- CAM KITS
- Camaro Supercharger
- camshaftonlyPD
- Chevrolet SS
- Clutch
- connect/cruise
- COOLING
- CORVETTE KITS
- CTS-V KITS
- CTS-V2Intake
- fbody kits
- FlexFuel
- Fuel Filter
- FUEL PUMP
- Fuel Regulator
- G8 KITS
- g8exhaust
- GAUGES
- gen2vexhaust
- GMBeltDrives
- GTO Exhaust
- GTO Kits
- gtobrakes
- GTOCooling
- GTODrivetrain
- GTOIntake
- GTOSuspension
- Head Fasteners
- heads
- Injector
- Injector Rails
- Intake
- Intake Catch Can
- Long Block
- Lower Pulley
- LSABeltDrive
- OEM GenV
- Rocker Arms
- SCRebuildKits
- SS Sedan Exhaust
- Supercharger
- tbss kits
- Transmission
- TRUCK KITS
- Tuning
- Tvs2650
- UNIVERSAL FUEL PUMP
- Upper Pulley