ENGINE. SP383 DELUXE ENGINE PACKAGE. COMPLETE WITH CARB AND DISTRIB ETC.
GM Chev SP383 crate engine as per picture and including HEI distributor, leads, Holley 80713 carburetor and GM air gap intake manifold
Chevrolet Performance 383 C.I.D. 435 HP Long Block Crate Engines
The all-new SP383 offers big block performance with a small block price tag! Chevrolet Performance starts with the legendary Fast Burn cylinder heads and the 383 c.i.d. bottom end, to offer an incredible 445 lbs.-ft. of torque at 4,600 rpm with a smooth, linear delivery. The combination of a 3.800 steel crank and a stout.509/.528 lift hydraulic roller camshaft produces 435 hp at 5,600 rpm, making the SP383 the benchmark by which all other 383 c.i.d. small blocks will be measured.
GM's testing was completed using a GM single-plane intake manifold, a 750 cfm Demon mechanical secondary carb, and 1 3/4 primary x 33 length headers with a four collector. A dual-plane intake manifold can be used, but will affect overall peak performance numbers by 15-20 hp.
TECH SPECS for the Chevrolet Performance 383 c.i.d. 435 hp long block crate engine:
Power: 435 hp at 5,600 rpm, 445 lbs.-ft. of torque at 4,600 rpm
Displacement: 383 c.i.d.
Bore x Stroke: 4.00 in. x 3.80 in.
Compression ratio: 9.6:1
Recommended fuel: 92 Octane
Block: Cast iron, one-piece rear seal, 4-bolt main caps
Crankshaft: 4340 forged steel
Connecting rods: HD powdered metal steel
Pistons: Hypereutectic aluminum
Camshaft: Steel hydraulic roller tappet
Cam lift:.509 in. intake /.528 in. exhaust
Cam duration @.050 in.: 222 deg. intake / 230 deg. exhaust
Lobe separation: 112 degree
Cylinder heads: GM Fast Burn aluminum dual bolt pattern, 3/8 in. screw-in rocker studs
Combustion chamber: 62cc
Valves:.200 in. intake / 1.55 in. exhaust
Rocker arms: Aluminum roller, 1.5:1 ratio
Valve springs: 12625033
Balance: External
Maximum GM recommended RPM: 6000
Ignition timing: Base 10 degrees BTDC, 36 degrees total at 4,000 rpm
Chevrolet Performance recommended converter stall 2,400-2,800
Engine Includes:
Fully GM assembled long block
Black aluminum valve covers
GM Eliminator single-plane Vortec intake manifold
770 cfm Chevrolet Performance carb
Oil pump, pickup and oil pan
12 3/4 in. auto trans flexplate
8 in. harmonic balancer
Front timing cover
Cast iron long water pump
HEI distributor, ignition wires, and spark plugs
Oil filter and adapter
Passenger side RH oil dipstick and tube