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
Availability: Ships today or next business day
Pricing: $509.95
Qty:

Description

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

Lift .200" .300" .400" .500" .600"
Intake Flow 151 208 256 294 316
Exhaust Flow 111 152 174 183 189

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

Application List

Universal

Details

  • 12629063
  • 12629063
  • Chevrolet Performance Parts
  • Ships today or next business day
  • New

Shipping Information

  • Item Requires Shipping
  • 24.0 lbs.
  • W22.0000” x H7.0000” x L9.0000”

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