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COMP Cams 51-433-11 Xtreme Energy Hydraulic Roller Camshaft Pontiac - 265-455

(Pontiac GTO 1964-73, Firebird 1967-77, 1979, Grand Prix 1962-73, 1975-79, Grand Am 1973-75, 1978-79, Bonneville 1958-71, 1973-79 + 14 more models)

Part of: COMP Cams Xtreme Energy Hydraulic Roller Camshaft GM

Other options in this family: COMP Cams 08-500-8 COMP Cams 20-811-9 COMP Cams 20-810-9 COMP Cams 07-503-8 COMP Cams 12-408-8

Manufacturer

Picture for manufacturer COMP Cams

Part Number

51-433-11
14 reviews
Sale Price

$608.95

In Stock (9)

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Usually delivered within 2 days

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Product Details

The COMP Cams Xtreme Energy 51-433-11 hydraulic roller camshaft is engineered specifically for Pontiac 265-455 cubic inch V8 engines, delivering aggressive performance gains for street/strip applications. This camshaft features 236/242 degrees of advertised duration, providing a broad powerband with excellent throttle response and strong mid-range to top-end power.

Key Features:

  • Hydraulic roller design reduces friction and wear while allowing higher RPM operation than flat tappet cams
  • 236° intake / 242° exhaust advertised duration for aggressive street performance
  • Optimized lobe profiles provide strong vacuum characteristics for street drivability
  • Compatible with factory hydraulic roller lifters and valve train components
  • Ideal for engines with aftermarket heads, intake manifolds, and exhaust systems
  • Produces a noticeable performance idle with excellent power delivery

The Xtreme Energy series from COMP Cams is designed for enthusiasts seeking maximum performance while maintaining reasonable street manners. This camshaft works best with 9.0:1 or higher compression ratio, performance valve springs, and a 2,000+ RPM stall converter for automatic transmissions. Perfect for Pontiac muscle car restorations and performance builds ranging from Firebirds to GTOs and Catalinas.

Products specifications

Fits

Pontiac GTO 1964-73, Firebird 1967-77, 1979, Grand Prix 1962-73, 1975-79, Grand Am 1973-75, 1978-79, Bonneville 1958-71, 1973-79, LeMans 1963-74, 1976-77, 1979, Catalina 1955-79, Tempest 1961, 1963-70 + 11 more models

Basic Operating RPM Range

2,200-6,000

Grind Number

XR288HR

Intake Valve Lift

0.52

Cam and Lifter Kit Upgrade

CL51-433-11

K-Kit Upgrade

K51-433-11

SK-Kit Upgrade

SK51-433-11

Engine Family

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

Usage

Street/Performance

Assembly Lubricant Included

No

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.

Exhaust Valve Lift

0.54

Lifter Type

Hydraulic Roller

Exhaust Duration at .050 inch Lift

242

Intake Duration at .050 Inch Lift

236

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Exhaust Duration

294

Advertised Intake Duration

288

Camshaft Series

Xtreme Energy

Super easy checkout and great promo code....best price around

Easiest and fastest checkout ever!! :)

I have to return two of my items, still waiting for return information.

I wish they would put the car models it may fit

Good prices on select items, appreciate Amazon integration.

This is our second order from Autoplicity. The first one didn't go so well due to a mix up with the Sparco seat pricing. Though I was starting to question our decision to order from them after several emails and phone calls and online chats, they came through in the end. These guys earned our second order by honoring the price they had listed and then calling to follow up when our race seat was shipped. Since this group was able turn our bad experience into a positive one we made our second order and, so far, it looks like they are again getting us what we want at the best price we can find. We are happy to recommend Autoplicty and plan on using them for future orders. There is one specific thing we would recommend, change the quality and volume of the hold music on the 800 #. It sounded like we were calling a 1970's van with a blown Jensen stereo turned all the way up,...

great prices

Im very satisfied with how fast i received my product from Autoplicity! The whole process was hassle free. If you looking for quality product for a great price than i would recommend Autoplicity!

Very easy ordering process. Free shipping is a plus.

Product was as described. Came very quickly...thanks.

Did a very good job at keeping me updated and letting me know when my product was being shipped. Only took a day to get out from the manufacturer. Very happy with the results. I will be back.

Easy purchase, and best price for what I was looking for, and shipping discount on top of that. Thanks again!

lets get it rolling guys!

Great Price!!!! Nobody beats their price an free shipping.......psshhh

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