Thumpr Hydraulic Flat Tappet Camshaft <br> 55-81 Pontiac 265-455

Description:

Mutha' Thumpr 235/249 Hydraulic Flat Cam for Pontiac 265-455. High performance street/strip, needs 9:1 compression, 2500+ stall, intake, Gears and headers, rough idle.

Features:

Camshaft Series: Thumpr

Lobe Separation: 107 DD

Intake Valve Lift: 0.49 IN

Exhaust Valve Lift: 0.475 IN

Lifters Included: No

Valve Springs Required: Yes

Assembly Lubricant Included: Yes

Camshaft Gear Attachment: 1-Bolt

Camshaft Material: Cast Iron

Cam and Lifter Kit Upgrade: CL51-601-5

Usage: Street/Strip

K-Kit Upgrade: K51-601-5

Lifter Type: Hydraulic Flat Tappet

Cam Type: Hydraulic Flat Tappet

Engine Family: Pontiac 265-455 C.I. 8 Cylinder (1955-1981)

Grind Number: 287TH7

Grind Number: 287TH7

Basic Operating RPM Range: 2,200-6,100

Intake Duration at .050 Inch Lift: 235 DD

Exhaust Duration at .050 inch Lift: 249 DD

Advertised Intake Duration: 287 DD

Advertised Exhaust Duration: 305 DD

Package Includes:

Engine Camshaft