Description
Thumpr 4/7 Swap 227/241 Hydraulic Roller Cam for Chevrolet 348-409Thumpr 4/7 Swap 227/241 Hydraulic Roller Cam
Advertised Exhaust Duration: 303 DD
Advertised Intake Duration: 280 DD
Assembly Lubricant Included: No
Basic Operating RPM Range: 2 000-5 800 R3
Cam Type: Hydraulic Roller
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Billet Steel
Camshaft Series: Thumpr 4 and 7 Swap Firing Order
Engine Family: Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
Exhaust Duration at .050 inch Lift: 241 DD
Exhaust Valve Lift: 0.546″
Grind Number: 47S 283THR-8
Intake Duration at .050″ Lift: 227 DD
Intake Valve Lift: 0.564″
Lifter Type: Hydraulic Roller
Lifters Included: No
Lobe Separation: 108 DD
Valve Springs Required: Yes
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