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COMP Cams 42-220-4 Xtreme Energy Hydraulic Flat Tappet Camshaft Oldsmobile - for 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)

Part of: COMP Cams Xtreme Energy Hydraulic Flat Tappet Camshaft Ford

Other options in this family: COMP Cams 31-238-3 COMP Cams 35-238-3 COMP Cams 35-242-3 COMP Cams 51-222-4 COMP Cams 31-242-3

Manufacturer

Picture for manufacturer COMP Cams

Part Number

42-220-4
6 reviews
Sale Price

$309.95

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Product Details

The COMP Cams 42-220-4 Xtreme Energy camshaft is a hydraulic flat tappet performance camshaft designed specifically for Oldsmobile 260-455 cubic inch V8 engines. This camshaft delivers excellent mid-range torque and horsepower gains, making it ideal for street performance applications, towing, or RV use.

Camshaft Specifications:

  • Advertised Duration: 260°/268° (intake/exhaust)
  • Duration @ .050": 206°/212° (intake/exhaust)
  • Valve Lift: .420"/.442" (intake/exhaust) with 1.6 rocker ratio
  • Lobe Separation Angle: 112°
  • Hydraulic flat tappet design for reliable operation and minimal maintenance
  • Recommended RPM Range: Idle-5,000 RPM
  • Recommended Valve Spring: COMP Cams 26918 or equivalent

Key Features:

  • Xtreme Energy lobe profiles provide aggressive performance with smooth idle quality
  • Optimized for improved throttle response and power throughout the RPM range
  • Compatible with stock or aftermarket cylinder heads and intake manifolds
  • Works with factory hydraulic lifters or performance hydraulic lifters
  • Designed for engines with 9.0:1 to 10.5:1 compression ratio

This camshaft is compatible with Oldsmobile small block and big block engines from 260 to 455 cubic inches, including 260, 307, 330, 350, 403, 400, 425, and 455 displacements. The Xtreme Energy series features advanced lobe design technology that maximizes area under the lift curve for increased power while maintaining excellent street manners. Requires valve spring upgrade and proper break-in procedure for optimal performance and longevity.

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

Grind Number

XE250H

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

Cam and Lifter Kit Upgrade

CL42-220-4

K-Kit Upgrade

K42-220-4

Engine Family

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

SK-Kit Upgrade

SK42-220-4

AMAZON ASIN

B001R98ELU

Usage

Street/Performance

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

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.

Exhaust Duration at .050 inch Lift

212

Camshaft Series

Xtreme Energy

Great prices

Quick and easy. Good price

Nice company...Products are significantly cheaper than others and fast shipping.

Great Pricing (lowest i can find anywhere) and Quick Shipping, Product has no damage from shipping! Thank you Autoplicity!

Great product at a low price!

Best price for brake pads on the web! Great product! Happy with this purchase

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