CMW Trucks - 1947 - 1972 Chevy Truck Parts


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Discontinued - LS6 5.7L Base with Camaro/Firebird oil pan kit

Want to put LS6 power in your Corvette, Camaro or Firebird racecar? This long block assembly is the ticket. It comes with a Corvette oil pan installed, but includes a Camaro/Firebird oil pan and all the necessary components to fit it to the LS6 engine. The engine does not come with the intake manifold, throttle body, balancer, flexplate, exhaust manifolds or electronics.

Customize it to your tastes—knowing that it has the heart of a 405 hp titan. Includes hollow-stem valves, and the powerful reciprocating parts found on the LS6.

Possible Applications

  • The perfect replacement engine for your late model Camaro or Firebird

*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

Chevy Performance LS6 5.7 liter base engine image

Part #:12498399

ls6 5.7 liter base dyno image