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!!
- 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.
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.