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COMP Cams CL11-679-5 Xtreme Energy 252/260 Solid Flat Tappet Cam and Lifter Kit for Chevy Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1966-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 106 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL11-679-5
7 reviews
Sale Price

$482.95

Estimated ship date Friday, November 20

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Product Details

The COMP Cams Xtreme Energy CL11-679-5 is a complete camshaft and lifter kit designed specifically for Chevrolet Big Block engines (396-454 cubic inches). This solid flat tappet cam delivers aggressive performance with a 252/260 duration split, making it an excellent choice for high-performance street and strip applications.

Key Specifications:

  • Advertised Duration: 286°/294° intake/exhaust
  • Duration at .050": 252°/260° intake/exhaust
  • Valve Lift: .544"/.565" intake/exhaust (with 1.7:1 rocker ratio)
  • Lobe Separation Angle: 110°
  • RPM Range: 2,500-6,500
  • Solid flat tappet design for maximum durability

Complete Kit Includes:

  • Xtreme Energy camshaft with advanced lobe profiles
  • High-quality solid flat tappet lifters
  • Assembly lube for proper break-in
  • COMP Cams decals
  • Detailed installation instructions

This cam profile provides strong mid-range to top-end power with a noticeable performance idle. The Xtreme Energy grind features advanced lobe design technology that maximizes area under the lift curve for improved throttle response and power output. Ideal for performance street engines with aftermarket intake manifolds, headers, and higher compression ratios. Requires compatible valve springs and proper break-in procedure.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1966-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-80, Caprice 1966-76, C10 1975-81, El Camino 1966-75, Monte Carlo 1970-75 + 101 more models

Advertised Intake Duration

290

Lifter Type

Solid Flat Tappet

Kit Type

Cl-Kit - Cam and Lifter Kit

Basic Operating RPM Range

2,800-7200

Intake Duration at .050 Inch Lift

252

Exhaust Duration at .050 inch Lift

260

Camshaft Material

Cast Iron

Cam Type

Solid Flat Tappet

AMAZON ASIN

B000P5GOFA

Usage

Street/Performance

Assembly Lubricant Included

Yes

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.

Gaskets Included

No

Camshaft Gear Attachment

3-Bolt

Locks Included

No

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

Advertised Exhaust Duration

298

Intake Valve Lift

0.598

Exhaust Valve Lift

0.598

Valve Stem Seals Included

No

Engine Family

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

Camshaft Series

Xtreme Energy

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.

I would definitely order my auto parts from your shop again. I was impressed with the prices and the correspondence. Thanks!

Great prices will shop here again.

Best prices

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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