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COMP Cams K11-254-4 Xtreme Energy Hydraulic Flat Cam K-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

K11-254-4
5 reviews
Sale Price

$744.95

Estimated ship date Thursday, November 19

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Product Details

The COMP Cams K11-254-4 Xtreme Energy K-Kit is a complete camshaft package engineered for Chevrolet Big Block 396-454 engines seeking improved performance across the RPM range. This hydraulic flat tappet cam delivers 250° intake duration and 256° exhaust duration, providing a noticeable increase in throttle response and mid-range power while maintaining good street manners and idle quality.

Complete K-Kit Includes:

  • Xtreme Energy hydraulic flat tappet camshaft with 250/256 duration profile
  • Hydraulic flat tappet lifters (16 pieces)
  • Performance valve springs designed to match cam profile
  • Steel valve spring retainers
  • Valve locks (keepers)
  • Valve stem seals for positive oil control
  • Timing chain set for precise cam timing
  • Assembly lube to ensure proper break-in
  • Installation instructions and COMP Cams decals

This kit eliminates the guesswork of selecting compatible valvetrain components, providing everything needed for a complete cam installation. The Xtreme Energy grind is ideal for street/strip applications, muscle car restorations, and performance builds that require enhanced power without sacrificing driveability. Recommended operating range is 1500-5800 RPM, making it suitable for both daily drivers and weekend warriors.

Application: Chevrolet Big Block 396, 402, 427, and 454 cubic inch engines.

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

294

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.593

Intake Valve Lift

0.588

Intake Duration at .050 Inch Lift

250

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B001R98GJK

Usage

Street/Performance

Assembly Lubricant Included

Yes

LOBE SEPARATION

110

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

2,800-7000

Camshaft Gear Attachment

3-Bolt

Lifters Included

Yes

Advertised Exhaust Duration

306

Valve Springs Included

Yes

Exhaust Duration at .050 inch Lift

256

Engine Family

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

Camshaft Series

Xtreme Energy

Great Price on products and Shipping

Easy to use & liked shipping discount.

Fast shipping, Good communication, Highly recommended.!!!

quick delivery of the parts I need to fix my jeep

One of the simplest orders I have placed for autoparts. Well done

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