Thumpr 4/7 Swap 227/241 Hydraulic Roller Cam for Chevrolet 348-409

Thumpr™ 4/7 Swap 227/241 Hydraulic Roller Cam for Chevrolet 348-409. High performance street, stock converter ok, best with 2000+ converter & gears, choppy/thumping idle.
Grind Number: 47S 283THR-8
Engine Family: Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
RPM Operating Range: 2,000-5,800
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Thumpr 4 and 7 Swap Firing Order
Camshaft Gear Attachment: 3-Bolt
Usage: Street Performance
Valve Springs Required: Yes
Camshaft Material: Billet Steel
California Proposition 65: WARNING: Cancer and Reproductive Harm
Advertised Intake Duration: 280
Advertised Exhaust Duration: 303
Intake Duration at .050 Inch Lift: 227
Exhaust Duration at .050 Inch Lift: 241
Intake Valve Lift: 0.564
Exhaust Valve Lift: 0.546
Lobe Separation: 108
Assembly Lubricant Included: No