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COMP Cams 11-551-5 Magnum Marine Solid Flat Tappet Camshaft for Chevy Big Block 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 + 105 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-551-5
6 reviews
Sale Price

$325.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams 11-551-5 Magnum Marine camshaft is a solid flat tappet performance cam specifically designed for Chevrolet Big Block engines from 396 to 454 cubic inches. This marine-grade camshaft features a 242/250 duration profile that delivers strong mid-range torque and reliable power output in harsh marine environments.

Key Specifications:

  • Advertised Duration: 242° intake / 250° exhaust
  • Solid flat tappet design for durability and consistent valve control
  • Engineered specifically for marine applications with enhanced corrosion resistance
  • Compatible with Chevrolet Big Block 396, 402, 427, and 454 cubic inch engines
  • Optimized for applications requiring strong low-to-mid RPM torque
  • Requires solid lifters and appropriate valvetrain components

This Magnum Marine series camshaft is ideal for marine engine rebuilds and performance upgrades where reliability and consistent power delivery are essential. The solid flat tappet design provides precise valve timing and excellent durability in demanding marine conditions. Professional installation and proper break-in procedures are recommended to ensure optimal performance and longevity.

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 + 100 more models

Advertised Exhaust Duration

285

Basic Operating RPM Range

2,800-6,300

Grind Number

280S

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.575

Exhaust Valve Lift

0.604

Exhaust Duration at .050 inch Lift

250

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-551-5

K-Kit Upgrade

K11-551-5

Camshaft Series

Magnum Marine

SK-Kit Upgrade

SK11-551-5

Cam Type

Solid Flat Tappet

Assembly Lubricant Included

Yes

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

Yes

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

Intake Duration at .050 Inch Lift

242

Usage

Marine

AMAZON ASIN

B000P5G554

Advertised Intake Duration

280

Engine Family

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

Ordering was easy and accurate. I received my order in a timely manner and items were as described.

Seems like avery good product

able to find parts that a lot of places didnt have...

easy site to use good pricing

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.

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