Product Overview
Ford 1962-91 221, 255,260, 289, 302 Ci. (except 1982-85 302HO & 302 w/ HYD. roller lifters) Firing order 1-5-4-2-6-3-7-8. Ford SBF Mercury 289 302 Engine Pro Stage 4 Rough Idle Hydraulic Flat Tappet Cam. These cams are brand new in the box from the factory. Please look at the second picture for cam specs.
Hydraulic Lifter Cam
Stage 4 Cam (see cam range & selection chart), (3rd Picture).
Duration @ .050 Intake 227 Exhaust 234
Advanced Duration Intake 298 Exhaust 302
Valve Lift .520 Exhaust .520
Lobe Sep. Intake 107 Exhaust 117
Power range 2200-5400
Idle Rough
Comment: Good street performance cam with 2500 stall converter, good torque.
- 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
