Home > C5 Corvette 97-04 > Camaro Engine Upgrades > LS Cylinder Heads > Patriot Performance LQ9 Cylinder Heads - CNC Ported 035 LQ9 2.08"/1.60" 72cc Heads Assembled

Patriot Performance LQ9 Cylinder Heads - CNC Ported 035 LQ9 2.08"/1.60" 72cc Heads Assembled

Patriot Performance LQ9 Cylinder Heads - CNC Ported 035 LQ9 2.08"/1.60" 72cc Heads Assembled
Item Code# 2019
Regular Price$1,295.00
Qty.


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 heads feature 21-4N 2.08”/1.60” stainless steel valves, our Original Patriot Gold Dual .650” Lift springs, titanium retainers, Super 7 machined locks, custom honed bronze guides, machined spring bases, and viton rubber seals.

*Sold as Pair

Technical Specs:

  • Combustion Chamber: 72cc
  • Intake Runner: 227cc
  • Exhaust Runner: 70cc
  • Intake Valve: 2.08"
  • Exhaust Valve: 1.60"
  • Max. Valve Spring Lift: 0.650"
  • Spring Pressure Closed: 135 lbs. @ 1.800"
  • Spring Pressure Open: 375 lbs. @ 1.090"
  • Retainer Material: Titanium
  • Valve Seal Material: Viton
  • Valve Guide Material: Manganese Bronze
  • Valve Job: 5-angle







* Please note that there is a shipping discount on multiple items in the same order(excludes oversized items). Discount will be given when we process your sale. Shipping price reflects shipping within the continental United States. Alaska, Hawaii and Puerto Rico will have additional shipping charges. Hoods and other oversize items must ship truck freight. The customer is responsible for the truck freight charges to be paid on delivery.

We carry over a million car & truck parts and accessories. If you do not see the part that you are looking for give our friendly knowledgeable staff a call and we will be happy to help.

Call Our Toll Free Sales & Support Help Line

Call our friendly knowledgeable staff at (866) 853-3325 for orders, questions and help with any performance parts, upgrades, mods or auto accessories we offer.

Phone Sales (EST):

Monday - Friday: 10am - 6pm