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These GM Performance Parts Anniversary Edition all-aluminum ZL1 427 c.i.d. crate engines start with the ZL1 aluminum block, using the tooling that helped to create this legend in 1969. The block offers a full-strength structure, thick deck surfaces, and 4-bolt mains. Building on that foundation, the short block contains a forged steel crank, forged steel rods, and forged aluminum pistons for a 10.1:1 final compression ratio. Aluminum oval port heads and matching high-flow aluminum oval port intakes are paired with an 870 cfm carburetor. The camshaft is a hydraulic roller with a valve lift of .510 in. on the intake and .540 in. on the exhaust. They even added 1.7:1 aluminum roller rockers. Like the original ZL1, the Anniversary 427s come grossly underrated at 430 hp. Included with the GM Performance Parts Anniversary Edition all-aluminum ZL1 427 c.i.d. crate engines are a special owner's kit that includes official Anniversary 427 emblems to place on your car, as well as an engine data plaque and certificate of authenticity that share a matching serial number with the valve covers.
Engine Assembly, Crate Engine, Chevy 427, 430 hp, 450 lbs./ft Torque, ZL1, Anniversary Edition
Unit #266 of only 427 produced
- Displacement- 427
- Bore x stroke- 4.25 x 3.76
- Block- cast aluminum 4-bolt main caps
- Pistons- forged aluminum
- Camshaft Type- hydraulic roller
- Camshaft Lift- .510 intake/.540 exhaust
- Camshaft Duration(@.050in)- 211 intake/ 230 exhaust
- Cylinder Heads-aluminum oval port, 110cc chambers
- Valve Size -2.19 intake/1.88exhaust
- Compression- 9.5:1
- Rocker Arms- aluminum roller style
- Rocker Arm Ratio- 1.7:1
- Ignition Timing- base 8 degrees btdc, 36 degrees total
- Carburetor-870cfm
- Recommended Fuel -92 octane
- Maximum RPM- 6000
- Horsepower- 430@5800
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Notes: |
This engine is not designed, nor intended to be used in any marine applications. Engines installed in vehicles registered and normally operated outside of the United States carry no warranty. |
**This part is shipped via truck freight, additional shipping charges will apply. Multiple truck freight parts on an order may increase the shipping amount.
Note: This crate engine shipping charges have two components; Commercial Delivery Charge ($150) & Residential Charge.
The commercial shipping delivery to a freight terminal or commercial address ((provided the commercial address has a forklift to unload the product). If the product is shipped to a residential address there is an additional cost of $300 for the use of a lift-gate vehicle. Please call USM (888-876-7223) for any questions.
Truck Freight: Most Truck Freight items have two standardized shipping rates, one rate to the terminal, another to your door. Additional fees apply for lift gate service; to avoid this you can choose terminal pickup.
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