Thumpr Hydraulic Roller Camshaft <br> 58-65 Chevy 348-409

Description:

Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam

Features:

Camshaft Series: Thumpr 4 and 7 Swap Firing Order

Intake Valve Lift: 0.586 IN

Exhaust Valve Lift: 0.571 IN

Lifters Included: No

Valve Springs Required: Yes

Assembly Lubricant Included: No

Camshaft Gear Attachment: 3-Bolt

Camshaft Material: Billet Steel

Engine Family: Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)

Lifter Type: Hydraulic Roller

Cam Type: Hydraulic Roller

Grind Number: 47S 299BMTHR-8

Grind Number: 47S 299BMTHR-8

Basic Operating RPM Range: 2,500-6,400

Intake Duration at .050 Inch Lift: 243 DD

Exhaust Duration at .050 inch Lift: 257 DD

Advertised Intake Duration: 299 DD

Advertised Exhaust Duration: 319 DD

Lobe Separation: 108 DD

Package Includes:

Engine Camshaft