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COMP Cams 51-413-11 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

51-413-11
10 reviews
Sale Price

$608.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams Xtreme Energy hydraulic roller camshaft is engineered specifically for Pontiac V8 engines ranging from 265 to 455 cubic inches. This camshaft delivers excellent performance gains across the RPM range, making it an ideal choice for street performance applications and mild race builds.

Camshaft Specifications:

  • Intake Duration: 212 degrees at 0.050" lift
  • Exhaust Duration: 218 degrees at 0.050" lift
  • Hydraulic roller design for reduced friction and increased durability
  • Optimized lobe profiles for improved throttle response and power delivery
  • Compatible with factory hydraulic roller lifters and valvetrain components

Performance Characteristics:

  • Produces strong mid-range torque with good top-end horsepower
  • Smooth idle quality suitable for street-driven vehicles
  • Works well with stock or mildly modified cylinder heads
  • Recommended for engines with 9.0:1 to 10.5:1 compression ratio
  • Power range: 1,500-6,000 RPM

The Xtreme Energy series from COMP Cams features advanced lobe design technology that maximizes valve acceleration while maintaining excellent durability. This camshaft requires hydraulic roller lifters and is designed to work with factory or aftermarket roller rocker arms. Professional installation and proper valvetrain setup are recommended to achieve optimal performance and reliability.

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

Grind Number

XR264HR

Intake Valve Lift

0.487

Cam and Lifter Kit Upgrade

CL51-413-11

K-Kit Upgrade

K51-413-11

SK-Kit Upgrade

SK51-413-11

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.

Advertised Intake Duration

264

Exhaust Valve Lift

0.495

Lifter Type

Hydraulic Roller

Advertised Exhaust Duration

270

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Basic Operating RPM Range

1,000-5,000

Intake Duration at .050 Inch Lift

212

Exhaust Duration at .050 inch Lift

218

Camshaft Series

Xtreme Energy

First order with them. We ordered an exhaust system for our son's jeep, best price than other websites! Fast shipping! Highly recommend Autoplicity and will us them again!

awesome just what I was looking for

Awesome and quick

Good price, didn't see a place to put in coupon

paid for 2 day shipping i believe the shipping company screwed up but i needed it asap and it took to long missed my deadline. otherwise no complaints great product

quick , easy , priced right

excellent pricing!

Great experience hopefully fast shiping

great prices

Fast -regular- shipping even on large items. I was skeptical at first but I am happy and don't regret my purchase!!!

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