Advertised Exhaust Duration

:

303

Advertised Intake Duration

:

283

Amazon Asin

:

N/A

Basic Operating Rpm Range

:

1,700-5,500

C.a.r.b. E.o. Number

:

N/A

C.a.r.b. Exempt For California Certified Vehicles Manufactured Before 1965?

:

Yes, but must meet tailpipe emission standards for year of vehicle.

C.a.r.b. Exempt For Federally Certified Vehicles Manufactured Before 1967?

:

Yes, but must meet tailpipe emission standards for year of vehicle.

C.a.r.b. Exempt For Foreign Vehicles Manufactured Before 1967?

:

Yes, but must meet tailpipe emission standards for year of vehicle.

C.a.r.b. Exempt For On-road Vehicles?

:

No

C.a.r.b. Exempt For Racing And Off-road Only Vehicles?

:

Yes, but must be a race/competition only vehicle.

C.a.r.b. Exemption Reason

:

N/A

California Proposition 65

:

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

Camshaft Gear Attachment

:

1-Bolt

Camshaft Material

:

Billet Steel

Camshaft Series

:

Thumpr

Engine Family

:

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

Exhaust Duration At .050 Inch Lift

:

241

Exhaust Valve Lift

:

0.498

Grind Number

:

283THR7

Intake Duration At .050 Inch Lift

:

227

Intake Valve Lift

:

0.513

Lifters Included

:

Yes

Lobe Separation

:

107

Title

:

Thumpr 227/241 Hydraulic Roller Cam K-Kit for Pontiac 265-455

Usage

:

Street/Performance

Valve Springs Included

:

Yes