Seller notes

Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454 Big Mutha' Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Grind Number: 295TH7Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)RPM Operating Range: 2,300-6,200Cam Type: Hydraulic Flat TappetLifter Style: Hydraulic Flat TappetCamshaft Series: ThumprCamshaft Gear Attachment: 3-BoltUsage: Street/StripValve Springs Required: YesCamshaft Material: Cast IronAdvertised I...

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