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COMP Cams 11-550-5 Magnum Marine Solid Flat Tappet Camshaft for Big Block Chevy 396-454

(Honda Accord 2013-15; Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73 + 105 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-550-5
6 reviews
Sale Price

$311.73

Estimated ship date Thursday, November 26

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Product Details

The COMP Cams 11-550-5 Magnum Marine camshaft is a solid flat tappet design specifically engineered for high-performance marine applications in Chevrolet big block engines displacing 396-454 cubic inches. This camshaft delivers a proven performance profile optimized for the unique demands of marine environments, where reliable power delivery and broad torque characteristics are essential.

Camshaft Specifications:

  • Advertised Duration: 235° intake / 242° exhaust
  • Solid flat tappet design for maximum durability and adjustability
  • Magnum Marine grind optimized for marine operating conditions
  • Compatible with Chevrolet big block 396, 402, 427, and 454 engines
  • Designed to work with stock to mildly modified cylinder heads
  • Requires adjustable valve train components (solid lifter setup)

This camshaft profile provides strong mid-range torque and excellent throttle response, making it ideal for inboard marine applications where consistent power under load is critical. The solid lifter design allows for precise lash adjustment and maintains valve timing accuracy even under the sustained high-RPM conditions common in marine use. COMP Cams manufactures this camshaft from premium materials with their proprietary heat-treating process to ensure long service life in demanding marine environments.

Application Notes:

  • Intended for marine engine builds with proper marine-grade components
  • Requires periodic valve lash adjustment (solid lifter maintenance)
  • Best suited for engines with 9.0:1 to 10.5:1 compression ratios
  • Recommended RPM range: 1500-5500 RPM

Products specifications

Fits

Honda Accord 2013-15; 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 + 100 more models

Advertised Exhaust Duration

280

Basic Operating RPM Range

2,500-6,500

Grind Number

270B

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.575

Intake Valve Lift

0.561

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-550-5

K-Kit Upgrade

K11-550-5

Camshaft Series

Magnum Marine

SK-Kit Upgrade

SK11-550-5

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.

Advertised Intake Duration

270

Camshaft Gear Attachment

3-Bolt

Exhaust Duration at .050 inch Lift

242

Intake Duration at .050 Inch Lift

235

Usage

Marine

Engine Family

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

AMAZON ASIN

B000P5D72S

product just as described, received in 3 days

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Great prices. Fast Shipping. I would definitely do business again.

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

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