Jasper Performance
Products
?Class II Version - Chevrolet 383?
Version Description:
The Class II Performance engine is for the serious performance minded person who needs power for a
specific application. These engines are built with heavy-duty performance in mind. Special components
and procedures are selected and matched to obtain maximum performance for your application.
385 hp (approx.) @ 5000 rpm ? 440 ft. lbs. Torque @ 3500 rpm
Part Specifications:
? Forged steel crankshaft
? Approximate 9.4:1 compression ratio
? High performance rod bolts and nuts
? High rev lifters and performance valve
springs with retainers
? High volume oil pump
? Double roller timing set
? Flat top hypereutectic pistons and moly rings
? Harmonic balancer
? Dart S/S Heads
? Screw in rocker studs
? High performance stainless steel valves:
2.02 Intake; 1.60 Exhaust
? Class II camshaft
? High performance bearings
? High performance head gaskets
? Four bolt main block
? Supplied w/Flex Plate
Machining Specifications:
? Kolene Salt Bath cleaning
? Three angle valve seat machining
? Precise surface finish measuring
? Square decking of block
? Main saddle align honing
? Electronically balanced engine assembly
? Torque plate honing
? Computerized boring
? Precision crankshaft machining, oil hole
chamfering and polishing
? Live testing
Camshaft Specifications:
? Hydraulic Camshaft
? .050 Duration: 224? Intake; 234? Exhaust
? Advertised Duration: 298? Intake; 308? Exhaust
? Cam Lift: .310 Intake; .325 Exhaust
? Valve Lift: .465 Intake; .488 Exhaust
? Lobe Center: 107? Intake; 117? Exhaust
Jasper Class II 383
