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COMP Cams 12-858-9 Oval Track 255/264 Solid Roller Camshaft for Chevrolet Small Block

(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)

Part of: COMP Cams Oval Track Solid Roller Camshaft Chevy Small Block

Other options in this family: COMP Cams 12-857-9 COMP Cams 12-861-9 COMP Cams 12-911-9 COMP Cams 12-940-9 COMP Cams 12-996-9

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-858-9
5 reviews
Sale Price

$558.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-858-9 is a high-performance solid roller camshaft specifically designed for oval track racing applications in Chevrolet small block engines. This camshaft features aggressive 255/264 duration specifications optimized to deliver strong mid-range to top-end power for competitive circle track racing.

Key Specifications:

  • Advertised Duration: 255° intake / 264° exhaust
  • Camshaft Type: Solid roller
  • Application: Oval track racing
  • Engine Compatibility: Chevrolet small block V8
  • Designed for maximum rpm power with strong mid-range torque

Performance Characteristics:

  • Aggressive profile delivers excellent throttle response and acceleration
  • Optimized lobe design for consistent power delivery throughout the rpm range
  • Solid roller construction provides maximum durability under extreme racing conditions
  • Engineered for oval track applications where sustained high-rpm operation is critical

This camshaft requires proper valve train components including solid roller lifters, heavy-duty valve springs, and appropriate pushrods. Professional installation and proper break-in procedures are essential for optimal performance and longevity. Ideal for dedicated oval track racing engines where rules permit solid roller camshafts.

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

Usage

Strip

Exhaust Valve Lift

0.63

Intake Valve Lift

0.645

Intake Duration at .050 Inch Lift

255

Grind Number

283TKBR-6

Basic Operating RPM Range

3500-7,500

Camshaft Series

Oval Track Xtreme TK

Assembly Lubricant Included

No

Lifters Included

No

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

Cam Type

Solid Roller

AMAZON ASIN

B001G7CYFU

Camshaft Material

Billet Steel

LOBE SEPARATION

106

Advertised Exhaust Duration

296

Advertised Intake Duration

283

Engine Family

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

Exhaust Duration at .050 inch Lift

264

Lifter Type

Solid Roller

Great,easy to use service!

Autoplicity was the cheapest place I could find for my Turbosmart Eboost2. I ordered my controller yesterday and they promptly gave me a receipt and a normal time frame for delivery. Today I got the tracking number and at lunch I got an email saying order complete and delivered. This was an awesome experience and I will definitely be using them next time i'm in the market for a similar product.

Very satisfied! My intake shipped on Friday and I received it on Tuesday. Not only super fast shipping, but a great deal to boot!

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

Very good customer service asked about a lot of different springs and parts for my Mazdaspeed 3.

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