Chevy BBC 427 454 HP Stage 4 527/553 Lift Cam Camshaft & Lifters Kit MC2305

Chevy BBC 427 454 HP Stage 4 527/553 Lift Cam Camshaft & Lifters Kit MC2305.

Engine Pro MC2305 Hydraulic Flat Tappet Camshaft! Also included is a SET of (16) HA817 Lifters!

This is for CHEVROLET Big Block V8 1967-95 396, 402, 427, 454 C.I. / 1969-90 366 C.I. (CHAIN DRIVE) engines.

Camshaft Specifications: 

• Stage:     4

• Duration @ .050":     Intake: 224 Exhaust: 232

• Advertised Duration:     Intake:302 Exhaust: 304

• Valve Lift:     Intake: .527 Exhaust: .553

• Lobe Separation:     Intake: 110 Exhaust: 118

• Power Range:     2500-6000

• Idle:     Rough

• Lifter Part #:     817

• Comment:HIGH PERFORMANCE STREET, STRONG MID-RANGE   MAY REQUIRE CONVERSION TO AN ADJUSTABLE VALVE TRAIN

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 heavy duty manual

• Compression Ratio: 10.5:1 to 11.0:1. Check valve to piston clearance