Chevy LS6 5.7L without ECM and Wire Harness - Corvette Z06

LS6 engines are already legendary for what they have done in the Corvette. Producing more than 400 horsepower, the LS6 is a great performer for any car. GMPP now offers this LS as a complete crate motor package.

Building on the LS1, the LS6 uses a higher lift cam with higher compression pistons to push the horsepower to over 400. GM Performance Parts ships the LS6 with the Corvette-style aluminum oil pan, large-volume composite intake manifold with single-bore throttle body and high-performance exhaust manifolds.

The LS6 looks great in older muscle cars and street rods for high-tech performance and fuel-injected dependability!

Possible Applications

  • LS your street rod
  • Dependable fuel injected performance
  • Update an old Vette

*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.

Part Number: 17801268
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, crossbolted main caps
Crankshaft (P/N 12583565): Nodular iron
Connecting rods (P/N 12577583): Powered metal steel
Pistons (P/N 88984245): Hypereutectic aluminum
Camshaft type (P/N 12565308): Hydraulic roller
Camshaft lift (in): .525 intake / .525 exhaust
Camshaft duration (@.050 in): 204'c1 intake / 211'c1 exhaust
Cylinder heads (P/N 12564825): Aluminum, symmetrical port
Valve size (in): 2.00 intake / 1.55 exhaust
Compression ratio: 10.5:1
Rocker arms: Investment cast, roller trunnion
Rocker arm ratio (P/N 10214664): 1.7:1
Recommended fuel: 92 octane
Maximum rpm: 6500
Reluctor wheel: 24X

LS6 5.7 liter corvette Zo6 engine image

Part #:17801268

ls6 5.7 liter corvette dyno image

Installation Notes

  • Assembly includes 14" flywheel.
  • Assembly does not include any electronics.