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COMP Cams K12-268-4 Xtreme Energy Hydraulic Flat Cam K-Kit for Chevrolet Small Block

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91 + 227 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K12-268-4
4 reviews
Sale Price

$655.95

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Usually delivered within 2 days

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Product Details

The COMP Cams K12-268-4 Xtreme Energy K-Kit is a complete camshaft installation package designed for Chevrolet small block engines with computer-controlled fuel injection systems. This comprehensive kit delivers improved mid-range torque and horsepower while maintaining drivability and compatibility with electronic engine management systems.

Camshaft Specifications:

  • Advertised Duration: 268°/280° intake/exhaust
  • Duration at .050": 224°/230° intake/exhaust
  • Valve Lift: .477"/.480" intake/exhaust (with 1.5 rocker ratio)
  • Lobe Separation Angle: 110°
  • Hydraulic flat tappet design for quiet, reliable operation
  • Optimized for street performance with 1,500-5,500 RPM power band

Complete K-Kit Includes:

  • Xtreme Energy hydraulic flat tappet camshaft
  • High-performance hydraulic lifters
  • Upgraded dual valve springs with damper
  • Steel valve spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set with sprockets
  • Assembly lube for proper break-in
  • Installation instructions and COMP Cams decals

This kit is specifically calibrated for engines with electronic fuel injection, providing excellent throttle response and power gains without sacrificing idle quality or emissions compliance. The hydraulic flat tappet design requires no valve lash adjustment and provides reliable, low-maintenance performance. Recommended for street performance applications, towing, and daily drivers seeking noticeable power improvements with stock or mildly modified cylinder heads.

Application: Chevrolet small block V8 engines (262-400 cubic inches) with factory fuel injection systems. Ideal for 1987-newer TPI, TBI, Vortec, and LS-swap applications using OEM-style roller timing covers.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91, C3500 1979-86, 1988-95, K2500 Suburban 1979-95, K3500 1979-86, 1988-95, C15/C1500 Pickup 1967-74, 1979-83 + 223 more models

Advertised Exhaust Duration

280

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.479

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Camshaft Series

Xtreme Energy Computer Controlled

AMAZON ASIN

B001R9HAG0

Usage

Street/Performance

Assembly Lubricant Included

Yes

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

Advertised Intake Duration

268

Camshaft Gear Attachment

3-Bolt

LOBE SEPARATION

114

Exhaust Duration at .050 inch Lift

230

Lifters Included

Yes

Valve Springs Included

Yes

Basic Operating RPM Range

1,800-5,800

Exhaust Valve Lift

0.48

Intake Duration at .050 Inch Lift

224

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)

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