GM Performance Cylinder Head, L92, Aluminum, Assembled, 70cc Chamber, Chevy, LS, Each
Part Number:GMP-12711770
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GM Performance Cylinder Head, L92, Aluminum, Assembled, 70cc Chamber, Chevy, LS, Each (PART #GMP-12711770)
GM Performance L92 cylinder heads are production-style aluminum heads that provide great airflow and exceptional performance.
Features include:
- Manufactured from 319-T5 aluminum alloy
- Aluminum performance head
- Fits any LS family engine with 4.000 in. bore or larger
- Solid stem intake and exhaust valves
- .510 in. Max Lift valve springs
- As-cast L92-style intake ports
- D-shaped exhaust ports
- As-cast combustion chambers
- Angled spark plugs (14mm; 5/8 in. hex; 3/4 in. reach; taper-seat plugs)
- 15 degree valve angle
- Bolt-down-type rocker arms
- Center-bolt valve cover hold-downs
SPECIFICATIONS |
|
| Brand | GM Performance |
| Manufacturer's Part Number | 12711770 |
| Part Type | Cylinder Heads |
| Product Line | GM Performance L92 Cylinder Heads |
| UPC | 00193468538618 |
| Combustion Chamber Volume (cc) | 70 |
| Cylinder Head Style | Assembled |
| Cylinder Head Material | Cast aluminum |
| Camshaft Style | Hydraulic roller |
| 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.) | 0.510 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 |
| Rocker Arm Studs Included | Yes |
| Rocker Arm Nut Thread Size | 3/8 in.-24 |
| Rocker Arms Included | No |
| Rocker Arm Nuts Included | No |
| Guideplates Included | No |
| Accessory Bolt Holes Drilled | No |
| Valve Guides Included | Yes |
| Valve Seats Machined | Yes |
| 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 | Fits any LS family engine with 4.000" bore or larger. |
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