Patriot Performance CNC Ported 035 LQ9 2.08"/1.57" 72cc Heads Bare

Our custom 5 axis CNC machined new GM castings make these heads a must have for any performance oriented GM LS series engine. These heads provide up to a 65 cfm improvement over stock OEM versions. The 72cc chambers are great for lowering compression for applications where a power adder will be used. The Stage III bare heads feature our 5 angle 2.08"/1.60" valve job, hand blending, and custom honed bronze guides.

*Sold as Pair

Part Number:  198-2018

Technical Specs:

Combustion Chamber: 72cc
Intake Runner: 227cc
Exhaust Runner: 70cc
Intake Valve: 2.08"
Exhaust Valve: 1.60"
Valve Guide Material: Manganese Bronze
Valve Job: 5-angle