The Chevy LS1 Engine
A new small-block legend in its own time!
Popular engines for TVR, Ultima, GDT70 and Cobra replicas - excellent power and reliability.
When GM dared to release a redesigned small-block in 1997, it succeeded beyond the expectations of enthusiasts around the world. Known as the LS Family V-8 small-block, the first and most popular version is the high-performance LS1 – available here as a GM crate engine.
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The original LS family member offers 5.7 litres of fuel injected fury and delivers 350 hp and 365 lb-ft of muscle. It makes a great performance engine for your performance vehicle project – just add your wiring and electronics. |
In many ways, the LS1 is superior to any small-block that came before it. A deep-skirt, six-bolt-main block, with structural oil pan and other carefully engineered features, helps make the LS1 a strong, smooth running and dependable engine. A highlift camshaft actuating big 2.00/1.55 valves in symmetrical-port cylinder heads helps make it a uncompromised performer.
The engine is rated at 350 horsepower and 365 lb.-ft. of torque. The engine includes a GTO-style oil pan, electronic drive-by-wire throttle body, intake manifold, exhaust manifolds, fuel rail with injectors, balancer, and 14" automatic transmission flexplate. It makes a great performance engine for your performance vehicle project – just add your wiring and electronics.
Technical Specifications & Power Output
| Block type |
Cast aluminium, 6-bolt cross-bolted main caps |
| Displacement |
346 (5.7L) |
| Bore x stroke |
3.90 x 3.62 (99 x 92 mm) |
| Cam type |
Hydraulic roller |
| Cam duration .050 in |
200 degree intake / 203 degree exhaust |
| Cam lift |
.500 intake / .500 exhaust |
| Rocker arm ratio |
1.7:1 |
| Valve size |
2.00 intake / 1.55 exhaust |
| Compression ratio |
10.25:1 |
| Crankshaft |
Nodular iron |
| Pistons |
Hypereutectic aluminium |
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