GM Performance Cylinder Head, LS3, Aluminum, Assembled, 68.4cc, 260cc Intake Runner, Each
Part Number:GMP-12629063
$1,421.00
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GM Performance Cylinder Head, LS3, Aluminum, Assembled, 68.4cc, 260cc Intake Runner, Each (PART #GMP-12629063)
Fit any LS engine with GM Performance LS3 cylinder heads. Manufactured from aluminum alloy, these GM stock replacement heads are assembled with intake and exhaust valves, stem seals, retainers, springs, and locks. Great cylinder head airflow has always supplied the LS Series with exceptional performance. Retain that performance and save yourself time and worry by replacing your tired cylinder heads with GM Performance LS3 cylinder heads.
SPECIFICATIONS |
|
| Brand | Chevrolet Performance |
| Manufacturer's Part Number | 12629063 |
| Part Type | Cylinder Heads |
| Product Line | Chevrolet Performance LS3 Cylinder Heads |
| Combustion Chamber Volume (cc) | 68.4 |
| Intake Runner Volume (cc) | 260cc |
| Cylinder Head Style | Assembled |
| Cylinder Head Material | Cast aluminum |
| Intake Port Shape | Rectangular |
| Intake Valve Diameter (in.) | 2.165 in. |
| CNC-Machined Combustion Chamber | No |
| CNC-Machined Intake Runner | No |
| CNC-Machined Exhaust Runner | No |
| Intake Port Location | Standard |
| Exhaust Port Shape | D-port |
| Exhaust Port Location | Standard |
| Spark Plug Style | Angle |
| Intake Valves Included | Yes |
| Exhaust Valves Included | Yes |
| Exhaust Valve Diameter (in.) | 1.590 in. |
| Valve Springs Included | Yes |
| Maximum Valve Lift (in.) | 0.570 in. |
| Outside Diameter of Outer Spring (in.) | 1.290 in. |
| Damper Spring Included | No |
| Number of Springs Per Valve | Single |
| Retainers Included | Yes |
| Retainer Material | Steel |
| Locks Included | Yes |
| Valve Stem Seals Included | Yes |
| Valve Stem Seal Style | Positive stop |
| Rocker Arm Studs Included | No |
| Rocker Arms Included | No |
| Rocker Arm Nuts Included | No |
| Guideplates Included | No |
| Valve Cover Mounting Style | Centerbolt |
| Accessory Bolt Holes Drilled | Yes |
| Intake Valve Angle | 15 |
| Exhaust Valve Angle | 15 |
| Valve Guides Included | Yes |
| Valve Guide Material | Powdered metal |
| Valve Seats Machined | Yes |
| Valve Seat Material | Steel |
| Cylinder Head Color | Natural |
| Steam Holes Drilled | No |
| Oiling Style | Through pushrod |
| Machined for O-Ring | No |
| Heat Crossover | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | These cylinder heads can only be used on 4 bolt LS-based engines with a 4.000 in. bore or larger. |
