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COMP Cams 12-855-9 Oval Track 253/257 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

12-855-9
8 reviews
Sale Price

$558.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-855-9 is a high-performance solid roller camshaft specifically engineered for oval track racing applications in Chevrolet Small Block engines. This aggressive camshaft profile delivers exceptional mid-range to top-end power ideal for circle track competition.

Camshaft Specifications:

  • Advertised Duration: 253° intake / 257° exhaust
  • Lift: Designed for use with 1.5:1 rocker arms
  • Solid roller design for maximum durability and high-RPM stability
  • Optimized lobe profiles for oval track racing power characteristics
  • Requires solid roller lifters, matching valve springs, and retainers

Performance Features:

  • Aggressive ramp profiles provide quick valve events for improved cylinder filling
  • Enhanced mid-range torque and top-end horsepower for competitive racing
  • Solid roller construction eliminates lifter pump-up at high RPM
  • Precision ground on COMP Cams CNC equipment for consistency

This camshaft is intended for dedicated racing engines with upgraded valve train components. Professional installation and proper break-in procedures are required. Compatible with Chevrolet Small Block V8 engines including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch variants.

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

285

Basic Operating RPM Range

3,000-7,200

Exhaust Valve Lift

0.645

Intake Valve Lift

0.645

Exhaust Duration at .050 inch Lift

257

Grind Number

281TKR-6

Usage

Circle Track

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

Camshaft Material

Billet Steel

LOBE SEPARATION

106

AMAZON ASIN

B001O07CGA

Advertised Intake Duration

281

Engine Family

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

Intake Duration at .050 Inch Lift

253

Lifter Type

Solid Roller

Great pricing and customer service. Item shipped on time and with no complicaitons. Best pricing on the internet that I could find. Great seller.

Bought Motive Brake Bleeding Kit (international) . Best Pricing all around.<br>Ordered on Tuesday , received via UPS Ground (cheap shipping) on Thursday Noon.<br>Excellent Packing.<br>Super Fast Shipping.<br>Very Statisfied with my on-line order.<br>Highly Recommended.

Excellent prices + great customer service = people I want to do business with... period.

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

Good customer service.Very friendly persons in service dept as well. Will shop here again.

This is the first time I've ordered from this site, but things look good from what I can tell so far. They had the parts I was looking for (including a fairly specialized racing part) for a price slightly lower than other places I had looked, and my order shipped the next business day. At the time I wrote this, they were also offering $5 back on my order for writing a review. ;-)

very good low price, had a slight issue but customer service was amazing,. i would recommend AutoPlicity to anyone because of that, good prices, good customer service,. (meaning trust worthy) why not :). A+++ Service will buy from again!

Best price and super fast shipping. Only issue was that their online order status system was really far behind! The system said my order was "pending" and it had been shipped. Later it said "processing" and it was on my doorstep. Not a big deal and certainly better than the opposite (they tell you something has happened when it hasn't) and doesn't keep them from being a 5 star seller in my book.

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