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COMP Cams 12-443-8 Xtreme Energy Hydraulic Roller Camshaft 242/248 Duration SBC

(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 + 238 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-443-8
10 reviews
Sale Price

$577.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams Xtreme Energy 12-443-8 is a high-performance hydraulic roller camshaft designed specifically for Chevrolet Small Block engines. This camshaft delivers excellent mid-range to top-end power with a smooth idle quality, making it ideal for street/strip applications and performance street builds.

Camshaft Specifications:

  • Advertised Duration: 268°/280° (Intake/Exhaust)
  • Duration @ .050": 242°/248° (Intake/Exhaust)
  • Valve Lift: .525"/.540" (Intake/Exhaust) with 1.5 rocker ratio
  • Lobe Separation Angle: 110°
  • Valve Lash: Hydraulic (zero lash)
  • RPM Range: 1,800-6,200 RPM

Key Features:

  • Hydraulic roller design eliminates the need for break-in procedures and provides improved durability
  • Aggressive profile delivers strong torque and horsepower gains throughout the power band
  • Compatible with factory fuel injection and emissions equipment when properly tuned
  • Works well with aftermarket cylinder heads, intake manifolds, and headers
  • Requires hydraulic roller lifters, compatible valve springs, and may require computer recalibration

This camshaft is an excellent choice for engines in the 350-400+ cubic inch range and pairs well with compression ratios of 9.5:1 to 10.5:1. The Xtreme Energy series is known for delivering maximum performance while maintaining reasonable idle characteristics and drivability for street use.

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 + 234 more models

Advertised Exhaust Duration

300

Advertised Intake Duration

294

Basic Operating RPM Range

2,800-6,100

Grind Number

XR294HR

Intake Valve Lift

0.54

Exhaust Valve Lift

0.562

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL12-443-8

K-Kit Upgrade

K12-443-8

SK-Kit Upgrade

SK12-443-8

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

Exhaust Duration at .050 inch Lift

248

Intake Duration at .050 Inch Lift

242

Cam Type

Hydraulic Roller

Engine Family

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

AMAZON ASIN

B000CEQDFA

Camshaft Series

Xtreme Energy

Very fast service. Will shop again with . very low prices

I would definitely order again. Part fit as expected

Great experience

My order was angled dignified I appreciate it. Thank you very much

Perfect

No was slightly damaged and one of the boxes inside we're open. All parts were there though.

Best Price

I would def order again from them great price and fast shipping.

It was a good price with fast delivery. They had the lowest price I found. My only comment was the shipping cost was more then I expected.

I was able to find a part I couldn't find anywhere else, and at a reasonable price! Thank you!

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