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COMP Cams CL11-684-5 Xtreme Marine 240/240 Hydraulic Flat Tappet Cam & Lifter Kit Big Block Chevy 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

CL11-684-5
12 reviews
Sale Price

$482.95

Estimated ship date Friday, November 20

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Product Details

The COMP Cams CL11-684-5 Xtreme Marine Hydraulic Flat Tappet Cam and Lifter Kit is purpose-built for Chevrolet Big Block 396-454 c.i. V8 marine applications (1967–1996). Engineered as part of COMP Cams' Xtreme Marine series, this kit leverages the latest developments in camshaft design to deliver aggressive lobe profiles that produce superior throttle response and top-end horsepower compared to other camshafts with equivalent duration at .050 in. lift — all while maintaining increased engine vacuum critical for marine use.

This camshaft is an excellent direct replacement for engines found in 575 SCI, 600 SC, and 800 SC marine applications, making it a trusted upgrade or restoration choice for performance boat builders and marine engine rebuilders alike.

Camshaft Specifications:

  • Grind: 240/240 Hydraulic Flat Tappet
  • Advertised Duration: 283° Intake / 283° Exhaust
  • Lobe Separation Angle: 115°
  • Lifter Type: Hydraulic Flat Tappet
  • Application: Chevrolet Big Block 396-454 c.i. (1967–1996)

Kit Contents:

  • Hydraulic flat tappet camshaft
  • Matching hydraulic lifter set
  • Assembly lube
  • COMP Cams decals
  • Installation instructions

The CL prefix in the part number designates this as a Cam and Lifter Kit — a convenient, matched set ensuring proper lobe-to-lifter compatibility right out of the box. Whether building a performance pleasure boat or a competition marine engine, the Xtreme Marine series delivers the durability and power gains demanded by the harsh marine environment.

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

Cam Type

Hydraulic Flat Tappet

Kit Type

Cl-Kit - Cam and Lifter Kit

Camshaft Series

Xtreme Marine

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.

Gaskets Included

No

Basic Operating RPM Range

2,200-6,200

LOBE SEPARATION

115

Locks Included

No

Exhaust Duration at .050 inch Lift

240

Intake Duration at .050 Inch Lift

240

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

Usage

Marine

Advertised Intake Duration

283

Valve Stem Seals Included

No

Engine Family

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

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