Description
Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for AMC 290-401CL-KIT – Cam and Lifter Kit Includes: CamshaftLiftersAssembly LubeDecals and Instructions.
Advertised Exhaust Duration: 312 DD
Advertised Intake Duration: 295 DD
Assembly Lubricant Included: Yes
Basic Operating RPM Range: 2 500-6 400 R3
Cam Type: Hydraulic Flat Tappet
Camshaft Gear Attachment: 1-Bolt
Camshaft Material: Cast Iron
Camshaft Series: Thumpr
Engine Family: American Motors 290-401 c.i. 8 Cylinder (1966-1991)
Exhaust Duration at .050 inch Lift: 257 DD
Exhaust Valve Lift: 0.497″
Gaskets Included: No
Intake Duration at .050″ Lift: 243 DD
Intake Valve Lift: 0.512″
Kit Type: CL-Kit – Cam and Lifter Kit
Lifter Type: Hydraulic Flat Tappet
Lifters Included: Yes
Lobe Separation: 107 DD
Locks Included: No
Retainers Included: No
Timing Chain and Gears Included: No
Usage: Street/Strip
Valve Springs Required: Yes
Valve Stem Seals Included: No
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