PRC 15-Degree 220cc As-Cast 64cc Chamber Cathedral Heads 4.8/5.3 LSPrecision 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. Features: 220cc Intake Runners 84cc Exhaust Runners Designed as a bolt on cylinder head with minimal change to pushrod length TSP . 660 Spring Kit w PAC Valve Springs & Titanium Retainers 64cc CNC Machined

The billet aluminum Lightning 45 bottle valve not only looks great

Gen with different length head bolts

The emboossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments

Manufacturer's Part Number:  18153

Throttle Body Included:  No

Length – 10

3" Pro Dash is customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need from a Holley EFI system

For nitrous or forced induction applications

Flow Data:

Ring and Pinion Gear

Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength

The center or shim layer is a uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements