PRC Stage 1.0 LQ9 CNC Ported Heads

All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology.

PRC’s stage 1 6.0L Cylinder Heads come standard with the following options:

NEW GM 317 Cores

2.00″/1.55″ GM Valves

Your Choice of Spring Kit

Completely Assembled and Milled to your Specifications

65-72cc Chambers

All PRC cylinder heads are extensively researched and tested. The flow data below shows the superior performance of the PRC stage 1 6.0L cylinder heads!

3.910″ Flow Plate – No Exhaust Pipe:

Lift Intake Flow Exhaust Flow

.200″ 147 cfm 114 cfm

.300″ 207 cfm 148 cfm

.400″ 255 cfm 187 cfm

.500″ 292 cfm 202 cfm

.600″ 313 cfm 220 cfm