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COMP Cams K11-678-5 Xtreme Energy Solid Flat Cam K-Kit for Chevrolet 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

K11-678-5
7 reviews
Sale Price

$696.02

Estimated ship date Thursday, November 19

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Product Details

The COMP Cams K11-678-5 Xtreme Energy K-Kit is a complete camshaft installation package designed for Chevrolet Big Block engines (396-454 cubic inches). This performance cam kit features a solid flat tappet camshaft with 244°/252° advertised duration, delivering increased mid-range power and throttle response for street/strip applications.

Complete K-Kit Includes:

  • Xtreme Energy solid flat tappet camshaft with aggressive profile
  • Matched solid lifter set engineered for high-RPM performance
  • High-performance valve springs designed to handle increased lift and duration
  • Precision-machined steel retainers for reliable valve train control
  • Hardened valve locks (keepers) for secure retainer installation
  • Valve stem seals to prevent oil consumption
  • Timing chain set with gears for accurate cam timing
  • Assembly lube to protect critical wear surfaces during initial break-in
  • Installation instructions and COMP Cams decals

This all-in-one kit eliminates the guesswork of component matching and provides everything needed for a professional camshaft installation. The Xtreme Energy profile is ideal for modified street engines, muscle car restorations, and weekend race applications where aggressive throttle response and strong mid-range torque are priorities. Recommended for engines with aftermarket cylinder heads, upgraded intake manifolds, and headers.

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

282

Basic Operating RPM Range

2,400-6,800

Lifter Type

Solid Flat Tappet

Intake Duration at .050 Inch Lift

244

Exhaust Duration at .050 inch Lift

252

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Cam Type

Solid Flat Tappet

AMAZON ASIN

B001R9FL9S

Usage

Street/Performance

Assembly Lubricant Included

Yes

LOBE SEPARATION

110

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

Lifters Included

Yes

Advertised Exhaust Duration

290

Valve Springs Included

Yes

Intake Valve Lift

0.59

Exhaust Valve Lift

0.598

Engine Family

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

Camshaft Series

Xtreme Energy

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

They were Very quick and i was very happy with the service i got!! 9-10*

Best price I could find on the web even after paying for shipping! Shipped in a couple of days and great service!

It has been interesting not very many parts for 1970 VW bug

The ordering process was very simple and the prices could not be beat. The processing time to ship the order was a little longer than usual, but for the price savings, it was well worth it!

Great site. Provided needed technical specs. Shipped promptly. Although I had to ask for the tacking number, it was not emailed, one was provided promptly upon request.

This is the easiest purchase I ever made. The visor is great and installation was a breeze. The service by Autoplicity was A-1. Shipping was better than standard. Will buy from them again.

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