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COMP Cams 51-240-4 Magnum 244/244 Hydraulic Flat Tappet Camshaft for Pontiac 265-455

(Pontiac GTO 1964-73, Firebird 1967-81, Grand Prix 1962-80, Grand Am 1973-75, 1978-80, Bonneville 1958-80, LeMans 1963-81, Catalina 1955-80 + 23 more models)

Part of: COMP Cams Magnum Hydraulic Flat Tappet Camshaft Ford

Other options in this family: COMP Cams 12-212-2 COMP Cams 35-226-3 COMP Cams 20-232-4 COMP Cams 32-225-4 COMP Cams 12-211-2

Manufacturer

Picture for manufacturer COMP Cams

Part Number

51-240-4
8 reviews
Sale Price

$309.95

In Stock (7)

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Product Details

The COMP Cams 51-240-4 Magnum camshaft delivers a classic hot rod sound and strong mid-range performance for Pontiac V8 engines from 265 to 455 cubic inches. This hydraulic flat tappet camshaft features a dual-pattern 244/244 duration at .050" lift, making it an excellent choice for street performance builds that prioritize torque and drivability.

Key Specifications:

  • Advertised Duration: 280°/280° intake/exhaust
  • Duration @ .050": 244°/244° intake/exhaust
  • Valve Lift (with 1.5 rocker): .462"/.462" intake/exhaust
  • Lobe Separation Angle: 110°
  • Hydraulic flat tappet design for quiet operation
  • Recommended RPM range: 1,500-5,800 RPM

Performance Characteristics:

  • Excellent idle quality with traditional hot rod lope
  • Strong low-end to mid-range torque production
  • Retains good vacuum for power brakes and accessories
  • Works well with stock or mildly modified compression ratios (9.0:1 to 10.0:1)
  • Compatible with stock torque converters and rear axle ratios

This camshaft is designed for street performance applications and pairs well with aftermarket intake manifolds, headers, and exhaust systems. It provides a noticeable performance improvement over stock while maintaining streetability and reliability. Requires compatible hydraulic flat tappet lifters, pushrods, and valve springs (sold separately).

Products specifications

Fits

Pontiac GTO 1964-73, Firebird 1967-81, Grand Prix 1962-80, Grand Am 1973-75, 1978-80, Bonneville 1958-80, LeMans 1963-81, Catalina 1955-80, Tempest 1961-70, Ventura 1960-61, 1971-75, 1977, Parisienne 1967-68, 1972-74 + 20 more models

Advertised Exhaust Duration

292

Advertised Intake Duration

292

Basic Operating RPM Range

2,500-6,500

Grind Number

292H

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.501

Intake Valve Lift

0.501

Intake Duration at .050 Inch Lift

244

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL51-240-4

K-Kit Upgrade

K51-240-4

Camshaft Series

Magnum

SK-Kit Upgrade

SK51-240-4

AMAZON ASIN

B000CEM584

Engine Family

Pontiac 265-455 C.I. 8 Cylinder (1955-1981)

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

244

Usage

Street/Strip

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