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COMP Cams 11-336-4 Marine Hydraulic Flat Tappet Camshaft Chevrolet Big Block - 253/260 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74 + 104 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-336-4
7 reviews
Sale Price

$309.95

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Product Details

The COMP Cams 11-336-4 is a hydraulic flat tappet camshaft specifically engineered for marine applications with Chevrolet Big Block engines (396-454 cubic inches). This camshaft delivers a balanced combination of smooth idle characteristics and reliable performance for marine use, where durability and salt-water resistance are critical.

Key Specifications:

  • Advertised Duration: 253° intake / 260° exhaust
  • Camshaft Type: Hydraulic flat tappet
  • Application: Marine Chevrolet Big Block 396-454
  • Design: Marine-duty profile optimized for boat engines
  • Valve train compatibility: Requires hydraulic flat tappet lifters

Features & Benefits:

  • Marine-specific grind designed to handle the demands of continuous operation and harsh saltwater environments
  • Smooth idle quality suitable for marine applications where low-speed maneuverability is essential
  • Moderate duration provides good low-end and mid-range torque for boat propulsion
  • Compatible with stock or mildly modified marine engine builds
  • Hydraulic design eliminates valve lash adjustment for easier maintenance

This camshaft is ideal for rebuilding or upgrading marine Chevrolet Big Block engines where reliable, proven performance is required. Pair with quality marine-grade lifters, timing set, and valve springs for optimal results.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74, C10 Pickup 1968-74, Caprice 1967-76, C10 1975-80, El Camino 1967-75, Monte Carlo 1970-75 + 99 more models

Advertised Exhaust Duration

312

Advertised Intake Duration

305

Basic Operating RPM Range

3,800-6,800

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.575

Exhaust Valve Lift

0.6

Exhaust Duration at .050 inch Lift

260

Grind Number

305AH

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-336-4

K-Kit Upgrade

K11-336-4

Camshaft Series

Marine

SK-Kit Upgrade

SK11-336-4

Assembly Lubricant Included

Yes

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

Yes

Lifter Type

Hydraulic Flat Tappet

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

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. 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.

Camshaft Gear Attachment

3-Bolt

Usage

Marine

Intake Duration at .050 Inch Lift

253

Engine Family

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

AMAZON ASIN

B000P5B8WY

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Great pricing and customer service. Item shipped on time and with no complicaitons. Best pricing on the internet that I could find. Great seller.

Great service, best price available online and realistic shipping costs, Ordered 5PM Friday, shipped Monday , received Tuesday end of day. Beats driving to the local store. Highly recommended !!<br><br>RS Larchmont NY

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