Precision Race Components 15 -Degree 220cc As-Cast Cathedral Heads

Precision Race Components presents a new cylinder head casting suitable for 4.8/5.3/LS1/LS2 engines. These are designed to match the stock valve angle of LS engines and have thicker decks, ensuring compatibility with stock piston-to-valve setups.

Origin:

• Cast, Machined, and Produced entirely in the USA.

Key Features:

• 220cc Intake Runners
• 84cc Exhaust Runners
• Bolt-on design with little to no pushrod length adjustment
• TSP .660 Spring Kit with PAC Valve Springs & Titanium Retainers
• 64cc precision-machined chambers
• CHE Bronze Guides
• 2.045″ Stainless Intake Valves and 1.600″ Stainless Exhaust Valves
• Compatible with factory rockers
• Extra thick deck surfaces for enhanced power

This new 220cc cylinder head is a superior 15-degree LS cathedral head, serving as a robust replacement for LS1/LS6/LS2 factory castings. It’s the ideal choice for those seeking a high-quality aftermarket option without changing 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

Texas Speed and Performance