PRC 15-Degree 220cc As-Cast Cathedral Heads

Manufacturer: Precision Race Components
SKU: 199-PRC220AC
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$1,820.69
PRC 15-Degree 220cc As-Cast Cathedral Heads 2007 Chevrolet Trailblazer
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Precision Race Components all new cylinder head castings completed with 220cc runners. For stock cubic inch 4.8/5.3/LS1/LS2 applications requiring a stock valve angle LS cylinder head with extra thick decks comparable to stock piston to valve.

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


Features:
  • 220cc Intake Runners
  • 84cc Exhaust Runners
  • Designed as a bolt on cylinder head with minimal change to pushrod length
  • TSP Spring Kit w/ PAC Valve Springs Rated To .660" Lift
  • 64cc CNC Machined Chambers
  • CHE Bronze Guides
  • 2.045" Intake / 1.600" Stainless Valves  
  • Factory Rocker Friendly!!*
  • Extra Thick Deck Surfaces For Power Adders
 
The all new 220cc cylinder head is finally available for customers looking for a bolt on 15 degree LS cathedral cylinder head.  Think of this cylinder head as the ultimate 15 degree LS1/LS2 cylinder heads for guys wanting a stronger replacement to the LS1 / LS6 / LS2 factory casting.  The perfect head for guys wanting a aftermarket casting  that will retain the use of all there existing components.
 
Flow Data:

4.00" Flow Plate - No Exhaust Pipe

 

LIFT INTAKE FLOW  EXHAUST FLOW 
 .100"   67 CFM  55   CFM 
 .200"    145 CFM  113 CFM
 .300"    207 CFM  166 CFM
 .400"    252 CFM  200 CFM
 .500"    292 CFM  215 CFM
 .600"    304 CFM  226 CFM
 .650"    311 CFM  228 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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