This Comp Cams 33-240-4 Ford FE 292H Magnum Hydraulic Flat Tappet Camshaft fits the BBF 352-428 engines from 1963-1977. Comp designed this cam for street/strip use, and it features great low-end torque and a racy idle. A 9.5:1+ compression ratio, headers, intake, low gears and a 2900+ stall speed torque converter are highly recommended. Comp Cams 33-240-4 Ford FE 292H Magnum Hydraulic Flat Tappet Camshaft Specs: For the Ford FE 352-428 cubic inch engines from 1963-1977 Basic RPM Range: 2500 to 6500 Valve Lift Intake: .560 Valve Lift Exhaust: .560 Intake Duration: 292 Exhaust Duration: 292 Intake Duration at .050”: 244 Exhaust Duration at .050”: 244 Lobe Separation: 110 Intake Centerline: 106 Firing Order: 1-5-4-2-6-3-7-8 Made in the USA Notes: Stock (O.E.) valve springs can NOT be used. Comp Cams designed this Flat Tappet camshaft for high performance on the street and the drag strip. Comp Cams – The Absolute Leader In Valve Train Technology!