A new small-block legend in its own time!
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 complete crate engine from GM Performance Parts.
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 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. It makes a great performance engine for your performance vehicle project-just add your wiring and electronics.
A handy reference guide (809-88959384) is available to help install the engine in older cars with minimal guesswork.
Go high-tech with your next project!
Displacement: 346 (5.7L)
Horsepower: 350 @ 5800 Rpm
Torque: 365 @ 4000 Rpm
Bore & Stroke: 3.90" x 3.62"
Block: Cast Aluminum with 6-bolt cross-drilled iron main caps
Crankshaft: Nodular Iron
Connecting Rods: Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Hydraulic Roller
Camshaft Lift: .500 Intake / .500 Exhaust
Camshaft Duration @.050: 198° intake / 209° Exhaust
Cylinder Heads: Aluminum;Cathedral Port
Valve Size: 2.00 Intake / 1.55 Exhaust
Compression Ratio: 10.25:1
Rocker Arms: Investment cast , Roller Trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 92 Octane
Maximum Rpm: 6000
Balance: Internal