PRC LS1/2 Cylinder Heads | 227cc | CNC Ported

Texas Speed & Performance have been at the forefront of we from Day One!

Responsible for setting & breaking almost every record, a major key to their success has been the R&D that goes into the Texas Speed Cylinder Head range known as PRC.

The Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications & all made, machined & ported in-house in USA.

Your New PRC CNC Ported Cylinder Heads Include

• 100% USA Made 6 Bolt LSX Cathedral Port Castings
• 62cc Combustion Chamber options
• 220cc Intake Runners
• Built In Rocker Pedestals (No Rocker Stands Required)
• PAC .660" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available
• 12 Degree Valve Angle
• 2.065" Stainless Steel Intake Valves (Optional Upgrades Available)
• 1.600" Stainless Steel Exhaust Valves
• CHE Bronze Valve Guides

PRC CNC Porting Process

• CNC machining of your cylinder heads intake runner
• CNC machining of your cylinder heads exhaust port
• CNC machining & porting of the combustion chamber to specified CC
• 5 Axis CNC cutting of your cylinder heads valve seats
• CNC cut valve spring seats
• Machine the deck face to increase compression
• Designed for 3.9"-4.0" Bore