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 51-220-4 Xtreme Energy Hydraulic Flat Tappet Camshaft 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 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

51-220-4
4 reviews
Sale Price

$309.95

3 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 Xtreme Energy 51-220-4 hydraulic flat tappet camshaft is engineered specifically for Pontiac 265-455 cubic inch V8 engines, delivering significant performance gains over stock profiles. This cam features 206 degrees of intake duration and 212 degrees of exhaust duration (measured at .050" lift), providing an aggressive idle with excellent mid-range to top-end power characteristics.

Key Specifications:

  • Intake Duration: 206° @ .050"
  • Exhaust Duration: 212° @ .050"
  • Hydraulic flat tappet design for reliable, low-maintenance operation
  • Xtreme Energy profile optimized for street/strip performance
  • Compatible with Pontiac 265, 287, 301, 326, 350, 389, 400, 421, 428, and 455 V8 engines

Performance Features:

  • Aggressive lope idle that announces serious performance intent
  • Strong midrange torque with excellent top-end power delivery
  • Designed for use with aftermarket performance valve springs and components
  • Ideal for street machines, muscle car restorations, and weekend bracket racing
  • Works well with headers, intake manifolds, and carburetor upgrades

The Xtreme Energy series represents COMP Cams' most popular performance hydraulic camshaft line, offering maximum performance while maintaining street drivability. This camshaft requires proper valve spring upgrades and careful attention to valve-to-piston clearance. Professional installation and degree-in procedures are recommended for optimal performance and engine longevity.

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

260

Advertised Intake Duration

250

Basic Operating RPM Range

600-4,800

Grind Number

XE250H

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.444

Intake Valve Lift

0.432

Intake Duration at .050 Inch Lift

206

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL51-220-4

K-Kit Upgrade

K51-220-4

SK-Kit Upgrade

SK51-220-4

AMAZON ASIN

B001O09RRW

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

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

This was my first purchase from Autoplicity, I bought a HyperTech tuner for my truck, they had absolutely the lowest price of anywhere I looked by far. Only thing I could fault them on is that it took 3 days for the product to ship, a little bit long I feel for something that was in stock, but Ill overlook it since it was such a great price.

Super, I am restoring an 1985 ford 150xl I order more!!!!

very good

I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.

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