PRC 237cc CNC Ported LS Cylinder Heads

PRC
$2,399.99
Current Stock:
SKU:
199-PRC237

 

Precision Race Components All New Cylinder Head Castings Completed With 237cc Runners For Larger Cube LS Based Engines.

Features:

  • 237cc Fully CNC Ported Intake Runners
  • 85cc Fully CNC Ported Exhaust Runners
  • Big Bore Chambers Designed For 4.010" Bore+
  • PRC Platinum Spring Kit Rated To .650" Lift
  • 68cc CNC Machined Chambers
  • 2.100" Intake / 1.600" Stainless Valves
  • Factory Rocker Friendly!!*

The all new 237cc cylinder head is custom designed for larger bore engines looking for max power out of a cathedral port layout.  The new 237cc port has been flow bench tested to flow over 340cfm & can support 4.010"+ bore street or race engines.  Engine dyno testing has shown these cylinder heads support over 650 flywheel horsepower in 408cid applications.

Flow Data:

4.030" Flow Plate - No Exhaust Pipe

 Lift

Intake Flow 

 

 Exhaust Flow

 

 .100"

 66 cfm

 

 57 cfm

 

 .200"

 147 cfm

 

 117 cfm

 

 .300"

 225 cfm

 

 170 cfm

 

 .400"

 284 cfm

 

 206 cfm

 

 .500"

 325 cfm

 

 227 cfm

 

 .600"

 334 cfm

 

 235 cfm

 

 .650"

 339 cfm

 

 241 cfm

 

 

 

 

 

 

*All aftermarket cylinder heads feature bronze guides. Stock rocker arms will cause increased guide wear in applications over .600" lift.  Roller rockers can help to reduce this wear.