The 385 hp rating of the engine is complemented by excellent low-rpm torque, with the SP350/385 generating 405 lb.-ft. of torque at 3,600 rpm. It’s all due to the high-flow, lightweight aluminum cylinder heads.
SP350-385 Tech Specs
Engine Type: Chevy Small-Block V-8
Displacement (cu. in.): 350
Bore x Stroke (in.): 4.000 x 3.480
Block: Cast iron with 4-bolt main caps
Crankshaft: Forge steel, shot peened
Connecting Rods: Powdered metal
Pistons: Hypereutectic aluminum
Camshaft Type: Hydraulic roller
Camshaft Lift (in.): 0.474” intake / 0.510” exhaust
Camshaft Duration (@.050 in.): 208° intake / 221° exhaust
Cylinder Heads: Fast Burn aluminum; 62-cc chambers
Valve Size (in): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.6:1 nominal
Required Fuel: Premium pump
Ignition Timing: 36° total at 4000 rpm
Maximum Recommended rpm: 5800
Balanced: External
