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COMP Cams 12-658-20 Oval Track Nitride Solid Flat Tappet Camshaft for Chevy Small Block - 260/266

(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

12-658-20
7 reviews
Sale Price

$406.95

Estimated ship date Tuesday, November 24

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Product Details

The COMP Cams 12-658-20 is a high-performance solid flat tappet camshaft specifically designed for oval track racing applications in Chevrolet small block engines. This camshaft features a nitride finish for enhanced durability and wear resistance under demanding racing conditions.

Camshaft Specifications:

  • Advertised Duration: 260° intake / 266° exhaust
  • Lobe design optimized for oval track competition
  • Solid flat tappet design for mechanical reliability
  • Nitride surface treatment for extended service life
  • Direct replacement for Chevrolet small block V8 engines (262-400 cu. in.)

This camshaft profile delivers a strong mid-range power band ideal for oval track racing where consistent torque and predictable power delivery are critical. The nitride finish provides a hard, wear-resistant surface that reduces friction and extends camshaft life in high-stress racing environments. Requires solid lifters, appropriate valve springs, and proper break-in procedures for optimal performance and longevity.

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

290

Usage

Strip

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.558

Exhaust Valve Lift

0.549

Intake Duration at .050 Inch Lift

260

Exhaust Duration at .050 inch Lift

266

Grind Number

290XO-8

Basic Operating RPM Range

3400-7,200

Camshaft Material

Nitrided Cast Iron

Cam Type

Solid Flat Tappet

Camshaft Series

Xtreme Oval

Assembly Lubricant Included

Yes

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

LOBE SEPARATION

106

AMAZON ASIN

B002EDX2H4

Engine Family

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

Autoplicity had the best price that I could find. The product was drop shipped from the factory and the time estimate that Autoplicity said was correct.

Very quick and easy

Nice company...Products are significantly cheaper than others and fast shipping.

Easy and fast so far

Great Pricing (lowest i can find anywhere) and Quick Shipping, Product has no damage from shipping! Thank you Autoplicity!

Great product at a low price!

Purchased K&N Filter. Excellent price and received filter as scheduled.

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