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COMP Cams 12-444-8 Xtreme Energy Hydraulic Roller Camshaft SBC - 248/254

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91 + 240 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

12-444-8
6 reviews
Sale Price

$577.95

In Stock (7)

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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 to deliver aggressive performance for small block Chevrolet engines. This camshaft features 248 degrees of intake duration and 254 degrees of exhaust duration (advertised), providing a strong mid-range to top-end power band ideal for street/strip applications.

Key Specifications:

  • Intake Duration: 248° advertised (218° @ .050")
  • Exhaust Duration: 254° advertised (224° @ .050")
  • Valve Lift: .477" intake / .479" exhaust (with 1.5 ratio rockers)
  • Lobe Separation Angle: 110°
  • Hydraulic roller design for reduced friction and increased durability
  • Recommended RPM range: 1,500-5,500
  • Recommended valve spring: COMP Cams #26918 or equivalent

Features & Benefits:

  • Xtreme Energy lobe profiles optimize performance across the power band
  • Hydraulic roller design eliminates the need for break-in procedures
  • Aggressive idle and excellent throttle response
  • Compatible with stock or aftermarket fuel injection and emissions equipment
  • Requires aftermarket converter and 9.0:1+ compression ratio for optimal performance

This camshaft is designed for small block Chevrolet engines and requires roller lifters, appropriate valve springs, and proper valve train geometry. Professional installation and valve train inspection recommended.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91, C3500 1979-86, 1988-95, K2500 Suburban 1979-86, 1992-95, K3500 1979-86, 1988-95, C15/C1500 Pickup 1967-74 + 236 more models

Advertised Intake Duration

300

Grind Number

XR300HR

Intake Valve Lift

0.562

Intake Duration at .050 Inch Lift

248

Basic Operating RPM Range

3200-6,200

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL12-444-8

K-Kit Upgrade

K12-444-8

SK-Kit Upgrade

SK12-444-8

Usage

Street/Performance

Assembly Lubricant Included

No

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.

Camshaft Gear Attachment

3-Bolt

Lifter Type

Hydraulic Roller

Cam Type

Hydraulic Roller

AMAZON ASIN

B000R9XC1S

Advertised Exhaust Duration

306

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)

Exhaust Valve Lift

0.58

Exhaust Duration at .050 inch Lift

254

Camshaft Series

Xtreme Energy

Great product - prompt service - helpful customer relations - will use them again and recommend them to others

Best price on the internet. A lot cheaper than amazon, so I was pretty surprised.

The item was what i was looking for and the price was right. Item was very good quality. Would order from Autoplicity again.

Very prompt service constantly helping me keep track of my order.

Helpful-reasonable prices-reasonable shipping-prompt.

Product (Dee-Zee nerf bars) was exactly as advertised. Buying experience was great. I did contact customer service via email to find out the shipping information. They were very helpful and replied within a few hours.

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