Comp Cams 51-234-4 Pontiac Magnum Hydraulic Flat Tappet Camshaft 280H

This Comp Cams 51-234-4 Pontiac 280H Magnum Hydraulic Flat Tappet Camshaft fits the 265-455 Pontiac engines from 1955-1981. Comp designed this cam for street/strip use, and it features strong torque and a choppy idle. A 9.0:1 or higher compression ratio, headers, lower gear and a 2400+ stall speed torque converter are highly recommended.

Comp Cams 51-234-4 Pontiac 280H Magnum Hydraulic Flat Tappet Camshaft Specs:

• For 265-455 cubic inch Pontiac engines from 1955-1981
• Stock (O.E.) valve springs can NOT be used.
• Basic RPM Range: 2000 to 6000
• Valve Lift Intake: .480
• Valve Lift Exhaust: .480
• Advertised Intake Duration: 280
• Advertised Exhaust Duration: 280
• Intake Duration at .050”: 230
• Exhaust Duration at .050”: 230
• Lobe Separation: 110
• Intake Centerline: 106
• Firing Order: 1-8-4-3-6-5-7-2
• Made in the USA

Comp Cams designed this Hydraulic Flat Tappet camshaft for high performance on the street and drag strip.

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