This Part No. Has Been Discontinued
LS1 5.7L with ECM and Wire Harness
GM Performance Parts offers this complete LS1 engine assembly, with electronics and wire harness. It provides a quick and easy way to get great power on the ground with a minimum of hassle.
The LS1 crate engine comes complete with a composite water intake manifold, single-bore throttle body, fuel rail with injectors, balancer, log-style exhaust manifolds, water pump and a 14" flexplate for automatic transmissions. It has the popular F-car (Camaro/Firebird) oil pan installed. The LS1 is easily adapted to older cars and street rods.
Possible Applications
- The perfect replacement engine for your Gen 4 Z28
- Add a high-tech twist to an old friend
- Discover the potential of a fuel-injected small-block Chevy.
*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See specific warranty information. Some applications may not be emission legal; check state and local ordinances.
| LS1 5.7L TECH SPECS: |
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| Part Number: | 25534322 |
| Engine type: | LS Series small-block V-8 |
| Displacement (cu in): | 346 (5.7L) |
| Bore x stroke (in): | 3.90 x 3.62 (99 x 92 mm) |
| Block (P/N 12561166): | Cast aluminum with 6-bolt, cross-bolted main caps |
| Crankshaft (P/N 89017522): | Nodular iron |
| Connecting rods (P/N 12568734): | Powdered metal steel |
| Pistons (P/N 88984245): | Hypereutectic aluminum |
| Camshaft type (P/N 12560965): | Hydraulic roller |
| Camshaft lift (in): | .500 intake / .500 exhaust |
| Camshaft duration (@.050 in): | 200'c1 intake / 203'c1 exhaust |
| Cylinder heads (P/N 12559855): | Aluminum, symmetrical port |
| Valve size (in): | 2.00 intake / 1.55 exhaust |
| Compression ratio: | 10.25:1 |
| Rocker arms (P/N 10214664): | Investment cast, roller trunnion |
| Rocker arm ratio: | 1.7:1 |
| Recommended fuel: | 92 octane |
| Maximum rpm: | 6000 |
| Reluctor wheel: | 24X |
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Part #: 25534322*
Installation Notes
- Crate engine kit includes ECM (shown) and wire harness that allows the engine to be installed with a four-speed (4L60 or similar) automatic transmission in a pre-1977 vehicle.
- 14" automatic transmission flexplate included.
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