12629063 - LS3 Cylinder Head Assembly
This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.
12629063 LS3 Cylinder Head Assembly Features:
Aluminum performance head
- Fits any LS family engine with 4.00" bore or larger
- 2.165" hollow stem intake, and 1.59" solid stem exhaust valves
- .550" max valve lift
- As-cast L92 style 260cc intake ports
- D-shaped exhaust ports
- As-cast combustion chambers
Head 12615879 is assembled with the following components:
- 12569427 Intake Valves
- 10166344 Valve Spring Retainers
- 12582719 Exhaust Valves
- 12482063 Intake Valve Stem Seals
- 12625033 Valve Springs
- 12482062 Exhaust Valve Stem Seals
- 10166345 Valve Locks
Related Install Parts:
New Coil on Cover Holley Valve Covers
GM Performance LS Head Bolt Package
GM Performance LS Head Gaskets
GM LS Valve Cover Bolts with Seal
GM LS Valve Cover Gasket Seal
GM Performance Intake Manifold Gasket Seal Kit GM Performance Exhaust Manifold Gasket GM Performance CNC LS3 Cylinder Heads
- Item Requires Shipping
- 24.0 lbs.
- W22.0000” x H7.0000” x L9.0000”
Total Reviews (0)
Write the First Review!
You must login to post a review.
May We Suggest
- We don’t just want your business today. We want to EARN your business for LIFE!
- USA Owned, Operated & Employed
- Installers & Resellers Click Here to Apply
We Specialize In:
- GM LS Conversions
- Engine & Trans Combo Kits
- Unique Ready to Run Engines
- Have a question?
- to Email our Sales & Tech Staff
- 888-748-4655 Mon-Fri 8AM-6PM EST
- Click above for 24/7 Live Chat Service.