My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams K42-220-4 Xtreme Energy 250H Hydraulic Flat Tappet Camshaft Complete Kit for Oldsmobile 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

K42-220-4
5 reviews
Sale Price

$619.95

1 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams K42-220-4 Xtreme Energy 250H Complete K-Kit delivers exceptional street performance for Oldsmobile 260-455 cubic inch V8 engines manufactured from 1967 to 1990. This hydraulic flat tappet camshaft kit is engineered to provide very strong torque output with excellent fuel mileage and a smooth idle, making it an ideal upgrade for daily drivers and weekend cruisers.

Performance Specifications:

  • Grind Number: XE250H-10
  • Duration at .050" Lift: 206° Intake / 212° Exhaust
  • Advertised Duration: 250° Intake / 260° Exhaust
  • Valve Lift: .443" Intake / .448" Exhaust
  • Lobe Separation: 110°
  • Operating RPM Range: 600-4,800

Xtreme Energy Technology:

COMP Cams Xtreme Energy camshafts feature quicker opening lobe profiles that deliver increased throttle responsiveness and more area under the lift curve compared to traditional grinds. The aggressive profile generates more engine vacuum, which allows for increased duration while maintaining excellent street manners and assisting power brakes. This camshaft works exceptionally well in street carbureted applications and delivers best results when paired with aftermarket intake manifolds, headers, and lower gear ratios.

Complete K-Kit Includes:

  • Xtreme Energy hydraulic flat tappet camshaft
  • Hydraulic lifter set
  • High-performance valve springs
  • Valve spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set
  • Assembly lube
  • Installation instructions and decals

All COMP Cams camshafts are manufactured to the strictest tolerances and rigorously tested for quality. This complete kit provides everything needed for a professional valve train upgrade, eliminating guesswork in component selection and ensuring optimal compatibility throughout the entire system.

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

Advertised Exhaust Duration

260

Advertised Intake Duration

250

Basic Operating RPM Range

600-4,800

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.443

Exhaust Valve Lift

0.448

Intake Duration at .050 Inch Lift

206

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Engine Family

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

AMAZON ASIN

B001R9DUSM

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

Lifters Included

Yes

Valve Springs Included

Yes

Exhaust Duration at .050 inch Lift

212

Camshaft Series

Xtreme Energy

Great pricing and quick shipping. GREAT

Awsome service and prices,Thanks alot

Easy payment and super fast shipping! Will order from again!

great prices

This store had a lot of products more than most other sites I looked at. The order was processed quickley and shiped the next day. I will use them again.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy