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COMP Cams CL42-231-4 Xtreme Energy Hydraulic Flat Tappet Camshaft 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

CL42-231-4
6 reviews
Sale Price

$397.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams CL42-231-4 Xtreme Energy hydraulic flat tappet camshaft and lifter kit is engineered specifically for Oldsmobile 260-455 cubic inch V8 engines. This complete kit delivers a robust street/strip performance profile with 230 degrees of advertised duration on both intake and exhaust, making it ideal for muscle car and marine applications seeking aggressive idle quality and strong mid-range to top-end power.

Key Specifications:

  • Advertised Duration: 230°/230° (Intake/Exhaust)
  • Hydraulic flat tappet design for reliable street performance
  • Designed for Oldsmobile 260, 307, 350, 403, 425, and 455 V8 engines
  • Optimal RPM range: 1,500-5,500 RPM
  • Requires valve spring upgrade for optimal performance

Complete Kit Includes:

  • High-performance camshaft
  • Matched hydraulic flat tappet lifters (16)
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

This camshaft kit provides noticeably improved throttle response and power gains over stock while maintaining good vacuum for power brakes. The aggressive lope at idle announces serious performance capability. Ideal for street machines, bracket racing, and marine applications where strong acceleration and top-end power are priorities. Professional installation and proper break-in procedure are recommended for maximum durability and performance.

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

280

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.49

Kit Type

Cl-Kit - Cam and Lifter Kit

Camshaft Material

Cast Iron

Camshaft Series

Marine

Engine Family

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

AMAZON ASIN

B001O09X2G

Usage

Street/Performance

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

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.

Gaskets Included

No

Basic Operating RPM Range

2,000-6,000

Locks Included

No

Exhaust Duration at .050 inch Lift

230

Intake Duration at .050 Inch Lift

230

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

Intake Valve Lift

0.49

Advertised Intake Duration

280

Valve Stem Seals Included

No

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