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

PRC's stage 3 LS6 Cylinder Heads come standard with the following options:

 

• NEW GM 243 or 799 Cores
• 2.08"/1.60" Stainless Steel Valves
• PRC .650" Lift Dual Valve Spring Kit Complete with Dual
  Springs, Titanium Retainers, Seats, & Seals
• Completely Assembled and Milled to your Specifications
• 58-64cc Chambers

 
All PRC cylinder heads are extensively researched and tested. The flow data below shows the superior performance of the PRC stage 3 LS6 cylinder heads!

 4.030" Flow Plate - No Exhaust Pipe

Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	114 cfm
.300"	211 cfm	154 cfm
.400"	262 cfm	194 cfm
.500"	301 cfm	211 cfm
.600"	324 cfm	230 cfm

 

You also have the option to upgrade to the PRC .675" Lift EHT Dual Valve Spring Kit. This spring kit is the top of the line and offers almost double the life of other valve spring kits on the market! The following items are included in the EHT dual spring kit:

• Dual Valve Springs Rated to .675” Lift
• Precision-Machined Titanium Retainers
• Hardened Machined Spring Seats
• New Viton Valve Seals

 

With all PRC cylinder heads, quality and performance are our two highest priorities! In addition to performance, you will not find a better performing cylinder head at this price (cost is for the pair!). Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application.