Chevy LS1 5.7L without ECM and Wire Harness
GM released a new small block called the LS line of engines. The LS1 crate engine was the first LS engine and comes with a deep skirt, six bolt main block. Oil pans are structural in nature. This LS1 has a high lift cam pushing on 2 inch intake valves and 1.55 exhaust valves. Symmetrical port cylinder heads flow very well to make great power.
Rated at 350 horsepower and 365 lb.-ft. of torque, you'll like the performance of the LS1. This crate engine includes a GTO-style oil pan, electronic drive-bywire throttle body, intake manifold, exhaust manifolds, fuel rail with injectors, balancer, and 14" automatic transmission flexplate. You add your wiring and electronics.
Possible Applications
- Gen 4 Z28 Replacement
- High tech HP
- Add a fuel-injected LS 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: | 17801267 |
| 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 #:17801267
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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