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COMP Cams 42-423-11 Xtreme Energy Hydraulic Roller Camshaft for Oldsmobile - 260-455

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

42-423-11
13 reviews
Sale Price

$608.95

3 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams Xtreme Energy 42-423-11 hydraulic roller camshaft is engineered specifically for Oldsmobile 260-455 cubic inch V8 engines, delivering substantial performance gains over stock profiles. This camshaft features a 224/230 duration split at .050" lift, providing an aggressive idle quality and strong mid-range to top-end power delivery ideal for street/strip applications.

Camshaft Specifications:

  • Advertised Duration: 268°/280° intake/exhaust
  • Duration at .050": 224°/230° intake/exhaust
  • Valve Lift (with 1.6 rocker ratio): .510"/.520" intake/exhaust
  • Lobe Separation Angle: 110°
  • Recommended RPM Range: 1,500-5,800 RPM
  • Hydraulic roller design for reduced friction and improved valve control

Key Features:

  • Xtreme Energy lobe profiles optimize performance across the powerband
  • Hydraulic roller design eliminates break-in procedures required with flat tappet cams
  • Aggressive sound with noticeable lope at idle
  • Designed for engines with aftermarket cylinder heads, intake manifolds, and headers
  • Requires hydraulic roller lifters, appropriate valvesprings, and pushrods (sold separately)
  • Recommended for use with 9.5:1 or higher compression ratio and 2,400+ stall converter

This camshaft is an excellent choice for Oldsmobile enthusiasts seeking significant performance improvements in street-driven muscle cars and weekend bracket racing applications. Professional installation and proper valvetrain setup is strongly recommended to ensure optimal performance and reliability.

Products specifications

Basic Operating RPM Range

1,800-5,600

Grind Number

XR276HR

Exhaust Valve Lift

0.505

Intake Valve Lift

0.505

Cam and Lifter Kit Upgrade

CL42-423-11

K-Kit Upgrade

K42-423-11

Engine Family

Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)

SK-Kit Upgrade

SK42-423-11

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.

Lifter Type

Hydraulic Roller

Exhaust Duration at .050 inch Lift

230

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Exhaust Duration

282

Intake Duration at .050 Inch Lift

224

Advertised Intake Duration

276

Camshaft Series

Xtreme Energy

Great communication and fast shipping using FedEx Home. My packages can even be delivered on Saturday. Great prices on hard to find parts. I would definitely buy from again. Thanks

Autoplicity had the item I wanted at a cheaper price than anybody online or in stores. They didn't have the item in stock, but they were very informative as to the status of my item. They have shown unheard of customer service via email since the inception of my order. I will definitely do business with them again.

Amazing prices, cheapest I could find anywhere. Only down side is the shipping is more than it should be.

Good web purchase

The web site was easy and it said my part is in stock. I'm a little suspicious since no one else has it in stock. I will change rating from 5 star to 1 star if it turns out you don't really have the part!!!

Great deals can be found at Autoplicity. I was a little hesitant at first since I never heard of them. Took a chance after reading the reviews and was very satisfied with their price, customer service, and speed of shipping. Thanks Autoplicity!

Good so far

I found autoplicity while trying to locate a side mirror for my vehicle. The website is user friendly and the prices are fantastic! The product is also shipped quickly... I am definitely going to purchase from Autoplicity again!

good price on intake.shipping to high on other items

"Excellent price and great customer service. Order was shipped promptly!! Would do business with them again. "

Yaaay

being this is a hard to find part.iam very pleased to find it in your store.

Great

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