88958758 - CNC LS3 Cylinder Head Assembly FREE Shipping
This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.
88958758 CNC LS3 Cylinder Head Assembly Features:
The CNC-ported LS3 head features 276cc intake runners and 92cc exhaust ports, along with a combustion chamber volume of about 68.5cc. That's the same volume as stock LS3 heads, which maintains the stock compression ratio. It will fit any LS engine with cylinder bores of 4.000 inches or larger, including 6.2L L92 truck engines.
Each head is delivered fully assembled, with 2.165-inch hollow-stem intake valves and 1.59-inch solid-stem exhaust valves, as well as valve springs, valve locks, spring retainers and valve stem seals. The maximum recommended valve lift with the stock valvetrain components is 0.550-inch.
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
- CNC L92 style 276cc intake ports
- D-shaped exhaust ports
- CNC 68.5cc combustion chambers
Head 88958758 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 Exhaust Manifold Gasket
GM Performance Intake Manifold Gasket Seal Kit
- Chevrolet Performance Parts
- Item Requires Shipping
- 24.0 lbs.
- W22.0000” x H7.0000” x L9.0000”
- Free Shipping
- FREE Shipping
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
- Free Shipping On Orders over $199 Rules and Restrictions apply, see shipping information for details
- 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.