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Vehicle Info NeededLS-Series L76/L92 Cylinder Head, Assembled
Ships on 09/14/2026
Lowest Price GuaranteeAssembled Head Components:
- Intake Valves - P/N 12627970
- Exhaust Valves - 809-12582719
- Valve Springs - P/N 12589774
- Valve Locks - P/N 10166345
- Valve Spring Retainers - P/N 10166344
- Intake Valve Stem Seals - P/N 12482063
- Exhaust Valve Stem Seals - P/N 12482062
12711770 supersedes 12629062
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
The Chevrolet Performance L76/L92 Aluminum Cylinder Head is designed to fit any LS family engine with a four inch or larger bore. The LS-Series family of engines has continued Chevrolet Performance's tradition of raising the power potential of the legendary small-block V-8. The great cylinder head airflow potential has been a key factor in the performance of these engines. This aluminum production style head is no exception with great out-of-box flow potential and is a true bolt-on replacement or performance upgrade!
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Features:
- Manufactured from 319-T5 aluminum alloy
- 2.165" solid stem intake valves
- 1.590" solid stem exhaust valves
- 15 degree valve angle
- .510" max valve lift
- As-cast 260cc L92 style intake ports
- D-shaped exhaust ports
- As-cast 70cc combustion chambers
- 14mm, 5/8" hex, 3/4" reach, taper-seat Angled spark plug
- Bolt-down-type rocker arms
- Center-bolt valve cover hold-downs
- Fits any LS family engine with 4.000" bore or larger
| Valve Lift | Intake Flow | Exhaust Flow |
| .200 | 151 | 111 |
| .300 | 208 | 152 |
| .400 | 256 | 174 |
| .500 | 294 | 183 |
| .600 | 316 | 189 |
