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

Description:

Thumpr 227/241 Hydraulic Flat Cam for Pontiac 265-455 Thumpr - High performance street, stock converter ok, best with 2000+ converter and Gears. Choppy/thumping idle.

Features:

Camshaft Series: Thumpr

Lobe Separation: 107 DD

Intake Valve Lift: 0.478 IN

Exhaust Valve Lift: 0.465 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: CL51-600-5

K-Kit Upgrade: K51-600-5

Usage: Street/Performance

Lifter Type: Hydraulic Flat Tappet

Cam Type: Hydraulic Flat Tappet

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

Grind Number: 279TH7

Grind Number: 279TH7

Basic Operating RPM Range: 2,000-5,800

Intake Duration at .050 Inch Lift: 227 DD

Exhaust Duration at .050 inch Lift: 241 DD

Advertised Intake Duration: 279 DD

Advertised Exhaust Duration: 297 DD

Package Includes:

Engine Camshaft