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COMP Cams K42-221-4 Xtreme Energy Hydraulic Flat Cam K-Kit for Oldsmobile Engine Camshaft Kit - 260-455

(Pontiac Firebird 1977-79, Grand Prix 1977, Bonneville 1977-81, LeMans 1976-77, Catalina 1977-81, Ventura 1975-77, Parisienne 1986 + 31 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K42-221-4
5 reviews
Sale Price

$562.95

Estimated ship date Wednesday, November 25

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Product Details

The COMP Cams K42-221-4 Xtreme Energy K-Kit is a complete camshaft upgrade package designed specifically for Oldsmobile 260-455 cubic inch V8 engines. This comprehensive kit delivers improved mid-range torque and horsepower with a 212/218 duration profile, making it an excellent choice for street performance applications and mild street/strip builds.

Camshaft Specifications:

  • Advertised Duration: 268°/280° intake/exhaust
  • Duration at .050": 212°/218° intake/exhaust
  • Valve Lift: .447"/.447" intake/exhaust (with 1.6:1 rocker ratio)
  • Lobe Separation Angle: 110°
  • Hydraulic flat tappet design for reliable street performance

Complete K-Kit Includes:

  • Xtreme Energy camshaft with hydraulic flat tappet profile
  • High-performance hydraulic lifters
  • Matched valve springs for proper valve control
  • Steel retainers and valve locks
  • Valve stem seals
  • Timing chain set for precise cam timing
  • Assembly lube for proper break-in
  • Installation instructions and COMP Cams decals

This kit provides everything needed for a professional camshaft installation, eliminating the guesswork of component matching. The Xtreme Energy grind offers a smooth idle quality while delivering noticeable performance gains throughout the RPM range. Ideal for street machines, muscle car restorations, and weekend cruisers looking for that classic performance cam sound and improved throttle response.

Products specifications

Fits

Pontiac Firebird 1977-79, Grand Prix 1977, Bonneville 1977-81, LeMans 1976-77, Catalina 1977-81, Ventura 1975-77, Parisienne 1986, Bonneville (SE/SSE) 1977-81, Grand LeMans 1976-77, Grand Safari 1977-78, Safari 1987-89, Phoenix 1977 + 26 more models

Basic Operating RPM Range

1,000-5,200

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.453

Exhaust Valve Lift

0.456

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Engine Family

Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)

AMAZON ASIN

B001R98J7E

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

Advertised Exhaust Duration

268

Lifters Included

Yes

Valve Springs Included

Yes

Intake Duration at .050 Inch Lift

212

Advertised Intake Duration

256

Exhaust Duration at .050 inch Lift

218

Camshaft Series

Xtreme Energy

Quick and easy.

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.

great experience, good price, item arrived within 4 days of purchase, would do business with again in future !

The order didn't go through the first time so I had to add my credit card information twice, so I hope I only get 1 order and not duplicates. Thanks

Easy order placement, fast shipment

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