LS9 SPECS
Displacement 376 ci
Bore and stroke 4.06 x 3.62 inches
Block material Cast aluminum
Head material A356-T6 rotacast aluminum
Valvetrain Overhead valve, 2.16-inch titanium intake, and 1.59 inch hollow-stem, sodium-filled exhaust
Fuel delivery SFI (sequential fuel injection)
Compression ratio 9.1:1
Horsepower 638 @ 6,500 rpm
Torque 604 lb-ft @ 3,800 rpm
Fuel Premium required
Exhaust manifolds Stainless steel
Crankshaft Forged steel
CAMSHAFT
Type Hydraulic roller
Lift 0.562/0.558-inch intake/exhaust
Duration at 0.050 211/230 degrees intake/exhaust
Supercharger Eaton R2300 four-lobe Roots-style displacing 2.3 liters
Boost 10.5 psi maximum