Classic Thumpr Hydraulic Flat Tappet Camshaft <br> 58-65 Chevy 348-409

Description:

Classic Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Chevrolet 348-409. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.

Features:

Camshaft Series: Classic Thumpr

Intake Valve Lift: 0.537 IN

Exhaust Valve Lift: 0.521 IN

Lifters Included: No

Valve Springs Required: Yes

Assembly Lubricant Included: Yes

Camshaft Gear Attachment: 3-Bolt

Camshaft Material: Cast Iron

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

Lifter Type: Hydraulic Flat Tappet

Cam Type: Hydraulic Flat Tappet

Grind Number: 295TH7

Grind Number: 295TH7

Basic Operating RPM Range: 2,500-6,000

Intake Duration at .050 Inch Lift: 242 DD

Exhaust Duration at .050 inch Lift: 257 DD

Advertised Intake Duration: 294 DD

Advertised Exhaust Duration: 312 DD

Lobe Separation: 107 DD

Package Includes:

Engine Camshaft