Chevy LS7 7.0L - NO ECM and Wire Harness

LS7 engines need no introduction. When the 2006 Vette showed up, it could hit 60 mph in 3.5 seconds and top out at 198 mph. This was made possible by a technically superior LS7 engine. The LS7 is a massive 7.0 liter small block engine. The LS7 uses a 7.0-liter aluminum dry-sump block, CNC-ported cylinder heads and titanium rods and valves to pump out 505 hp and 470 lb.-ft. of torque. Add an LS7 to your older Vette for over 500 horsepower and hang on fun!

Possible Applications

  • A top performing older 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: 17802397
Engine type: Cam-in-block 90-degree V8
Displacement (cu in): 427 (7.0L)
Bore x Stroke (in): 4.125 x 4.00 (104.8 mm x 101.6 mm)
Block P/N 17802854: Cast aluminum w/6-bolt steel main bearing caps
Crankshaft (P/N 12568819): Forged steel
Connecting rods (P/N 12586258): Forged titanium
Pistons (P/N89017774): Hypereutectic aluminum
Camshaft type(P/N 12571251): Hydraulic roller
Camshaft lift: .591" (15 mm) Intake and Exhaust
Camshaft Duration: 211'c1 intake / 230'c1 exhaust
Cylinder heads (P/N 12578450): CNC Ported LS7 specific pattern 70 cc CNC combustion chambers
Valve size (in): 2.20" titanium intake, 1.61" sodium filled exhaust
Compression ratio: 11.0:1
Rocker arms: Investment cast, roller trunnion
Rocker arm ratio: 1.8:1 (offset intake only)
Recommended Fuel: 91 octane
Maximum rpm: 7,000
Reluctor wheel: 58X

LS7 7 liter engine image

Part #:17892397

LS7 7 liter dyno image

Installation Notes

  • Designed for pre-'77 street vehicles or all off-road vehicles.
  • Emission legal only as a replacement for '06 Corvette Z06.
  • Crate engine does not include wiring harness, electronics, or ECM.
  • Comes assembled with 14” Corvette Z06 168 tooth flywheel.
  • Comes with new '06 58X reluctor wheel and camshaft sensing and is not compatible with pre-'06 ECMs. Requires aftermarket ECM for any application other than '06 Corvette Z06.
  • LS7 is the same size and mounts the same as previous LS series engines.