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COMP Cams 11-604-5 Magnum Marine/Drag Race 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 + 104 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-604-5
5 reviews
Sale Price

$325.95

Estimated ship date Wednesday, November 25

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Product Details

The COMP Cams 11-604-5 Magnum camshaft is a high-performance solid flat tappet cam designed specifically for marine and drag racing applications in Chevrolet Big Block engines (396-454 cubic inches). This aggressive camshaft delivers exceptional power and performance for competition use.

Camshaft Specifications:

  • Advertised Duration: 256° intake / 266° exhaust
  • Solid flat tappet design for maximum durability and high-RPM performance
  • Optimized lobe profiles for marine and drag racing applications
  • Compatible with Chevrolet Big Block V8 engines: 396, 402, 427, and 454 cubic inch
  • Requires solid/mechanical lifters (not included)
  • Requires valve spring upgrade and proper break-in procedure

Performance Characteristics:

  • Aggressive profile delivers strong mid-range to top-end power
  • Excellent choice for bracket racing and marine competition
  • Rough idle quality—not recommended for street use
  • Requires higher stall converter and rear gear ratio for optimal performance

This camshaft is engineered for serious racers who demand maximum performance from their big block Chevy engine. Professional installation and proper valve train setup are essential for reliability and performance.

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

304

Advertised Intake Duration

294

Basic Operating RPM Range

3,500-6,500

Grind Number

294B-8

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.605

Intake Duration at .050 Inch Lift

256

Exhaust Duration at .050 inch Lift

266

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-604-5

K-Kit Upgrade

K11-604-5

Camshaft Series

Magnum Marine

SK-Kit Upgrade

SK11-604-5

Cam Type

Solid Flat Tappet

Assembly Lubricant Included

Yes

Lifters Included

No

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

Usage

Marine

AMAZON ASIN

B000V9AYB0

LOBE SEPARATION

108

Intake Valve Lift

0.58

Engine Family

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

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