Part No. 17802397
• This small-block V-8 dreams big, displacing big-block cubic inches at 7.0 Liters (427 cubic inches) and big-block power at 505 hp at 6300 rpm. It also benches 470 lb.-ft. of torque at 4800 rpm. Helping to create its high power and high revving capability are details such as cylinder heads with computer numerical control (CNC) intake and exhaust ports and combustion chambers - which creates ports with surgical accuracy for maximum power production. In addition, the intake valves and connecting rods are made out of high-strength lightweight titanium. The LS7 engines are assembled by hand at GM Powertrain's new Performance Build Center in Wixom, Mich.
• LS7 7.0L 427 without ECM and Wire Harness
• Most Powerful Small-Block Ever - Available in a Crate
• This latest Z06, billed as "the fastest, most powerful car ever offered by Chevrolet and GM," has enthusiasts looking for that kind of power in a crate engine. GM Performance Parts is ready to end that search as it offers the LS7 (P/N 17802397) nationwide in August.
• LS7 specifications:
Horsepower: 505 (373 kW) @ 6300 rpm
Torque (lb.-ft.): 470 (644 Nm) @ 4800 rpm
Engine type: Cam-in-block 90-degree V-8
Displacement (L/cu in): 7.0 / 427
Bore x stroke (mm/in) 104.8 x 101.6 / 4.125 x 4.00
Block: Cast aluminum with pressed-in cylinder sleeves and 6-bolt, forged steel main bearing caps
Crankshaft: Forged steel
Connecting rods: Forged titanium
Pistons: Cast aluminum
Camshaft type: Hydraulic roller, 15 mm (.591 in) lift (intake and exhaust)
Cylinder heads: CNC-ported aluminum; 70-cc chamber volume
Valve size (mm/in): 56 / 2.20 (titanium) intake / 41 / 1.61 (sodium-filled) exhaust
Compression ratio 11.0:1
Rocker arms: 1.8:1; offset (intake only)
Recommended fuel: Premium required. 91 octane minimum
• LS7 crate engine (P/N 17802397) includes:
Intake manifold with injectors
Injector wiring harness
Fuel rails
Throttle body
Dry sump oil pan
Exhaust manifolds
Flywheel & clutch
Harmonic dampener
Water pump and pulley
Coil Packs, spark plugs and wires
Engine sensors
• LS7 crate engine does not include:
Dry sump oil lines
Dry sump tank
Engine beauty cover
Engine processor
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