Advertised Exhaust Duration

:

312

Advertised Intake Duration

:

305

Amazon Asin

:

B000P5B8WY

Assembly Lubricant Included

:

Yes

Basic Operating Rpm Range

:

3,800-6,800

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

Cam And Lifter Kit Upgrade

:

CL11-336-4

Cam Type

:

Hydraulic Flat Tappet

Camshaft Gear Attachment

:

3-Bolt

Camshaft Material

:

Cast Iron

Camshaft Series

:

Marine

Engine Family

:

Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)

Exhaust Duration At .050 Inch Lift

:

260

Exhaust Valve Lift

:

0.6

Grind Number

:

305AH

Intake Duration At .050 Inch Lift

:

253

Intake Valve Lift

:

0.575

K-kit Upgrade

:

K11-336-4

Lifter Type

:

Hydraulic Flat Tappet

Lifters Included

:

No

Lobe Separation

:

110

Sk-kit Upgrade

:

SK11-336-4

Title

:

Marine 253/260 Hydraulic Flat Cam for Chevrolet Big Block 396-454

Usage

:

Marine

Valve Springs Required

:

Yes