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 51-247-4 Magnum 260/260 Solid 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 Solid Flat Tappet Camshaft Ford

Other options in this family: COMP Cams 32-237-4 COMP Cams 32-239-4 COMP Cams 11-217-4 COMP Cams 20-246-4 COMP Cams 32-240-4

Manufacturer

Picture for manufacturer COMP Cams

Part Number

51-247-4
7 reviews
Sale Price

$309.95

Estimated ship date Monday, November 23

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 51-247-4 Magnum camshaft is a solid flat tappet performance cam designed specifically for Pontiac V8 engines ranging from 265 to 455 cubic inches. This camshaft features a symmetrical 260/260 duration profile that delivers a balanced combination of mid-range torque and top-end horsepower, making it an excellent choice for street/strip applications.

Key Specifications:

  • Advertised Duration: 260° intake / 260° exhaust
  • Duration @ .050": 214° intake / 214° exhaust
  • Valve Lift: .447" intake / .447" exhaust (with 1.5:1 rocker ratio)
  • Lobe Separation Angle: 112°
  • RPM Range: 1,500-5,500
  • Solid flat tappet design

Features & Benefits:

  • Symmetrical lobe profile provides smooth, predictable power delivery
  • Excellent street manners with vacuum levels suitable for power brakes
  • Increased throttle response throughout the rev range
  • Compatible with stock or performance cylinder heads and intake manifolds
  • Works with stock torque converters and rear axle ratios
  • Requires adjustable valve train components for proper solid lifter operation

This camshaft is ideal for enthusiasts looking to upgrade from a stock Pontiac cam while maintaining good street drivability. The moderate lift and duration specifications work well with factory components while providing a noticeable performance gain. Proper break-in procedures using COMP Cams break-in oil additive are required for solid flat tappet camshafts.

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 Intake Duration

306

Grind Number

306S

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.555

Exhaust Duration at .050 inch Lift

260

Intake Duration at .050 Inch Lift

260

Basic Operating RPM Range

3,000-6500

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL51-247-4

K-Kit Upgrade

K51-247-4

Camshaft Series

Magnum

SK-Kit Upgrade

SK51-247-4

Cam Type

Solid Flat Tappet

AMAZON ASIN

B001R9BSXQ

Engine Family

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

Usage

Street/Performance

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

Yes

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.

Advertised Exhaust Duration

306

Exhaust Valve Lift

0.555

Fast service purchased from them many times no problems and usually have coupon codes!! Will do buissiness with again.

My experience with autoplicity was great. Great selection and service. Fast shipping. Will definitely use them again.

Cheapest price by far, not the speediest shipment unfortunately.

Found the best price at Autoplicity on my cold air intake. Quick turn-around time and inexpensive shipping. I'll definitely be back.

Great pricing on almost every product! Quick process and fast shipping! Will definitely order from Autoplicity again in the future.

quick and easy so far

quick and polite service will deal with 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