Chevy BBC 427 454 HP Stage 4 508/496 Lift Cam Camshaft MC22396 Mechanical

Chevrolet BBC Chevy Engine Pro very Rough Idle 396 402 427 Mechanical Flat Tappet Cam. Chevrolet big block V8 1967-95 396,402,427,454 C.I.  / 1969-90 366 ci. (Chain drive).  These cams are brand new in the box from the factory. Please look at the second picture for cam specs.

Mechanical Flat Tappet Cam

Stage 4 Cam (see cam range & selection chart), (2nd Picture).

Duration @ .050 Intake 242 Exhaust 242

Advanced Duration Intake 310 Exhaust 297

Valve Lift .508 Exhaust .496

Lobe Sep. Intake 108 Exhaust 120

Power range 3200-7000

Idle: Lash int. .020  exh. .024  very rough

Comment: Street strip, 9.5 compression, 3000 + stall converter.

Lifter: 992

• Ground in the USA American made casting and billets
• Computer designed lobe profiles for maximum power
• Journal roundness maintained to within .0002"
• Manganese phosphate coated, flame hardened castings or induction hardened billets
• Profiles are Adcole verified for the ultimate in accuracy

General Stage 4 Camshaft Specifications: 

• Idle Quality:   Rough. Manifold Vacuum Will Not Operate Power Brakes

• Torque:      Mid-Range 3000-4000 RPM

• Fuel Economy:      Poor

Recommendations:

• Towing:Not Recommended

• Racing: Bracket Drag Racing, Limited Oval Track

• Computer Controlled Vehicles: Not Recommended

• Transmission: Automatic With High Stall Converter or Manual

• Compression Ratio: 10.5:1 To 11.0:1. Check Valve to Piston Clearance