My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams 12-517-20 Drag Race Solid Flat Tappet Camshaft Chevrolet Small Block - 266/274

(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

12-517-20
7 reviews
Sale Price

$406.95

Estimated ship date Monday, November 23

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 12-517-20 is a high-performance solid flat tappet camshaft designed specifically for drag racing applications in Chevrolet small block engines. This aggressive cam profile delivers excellent top-end power and is engineered for tight lash settings to maximize performance in competitive racing environments.

Key Specifications:

  • Advertised Duration: 266° intake / 274° exhaust
  • Solid flat tappet design for maximum durability and performance
  • Tight lash specifications optimized for drag racing
  • Direct fit for Chevrolet small block V8 engines (262-400 cubic inches)
  • Engineered for high-RPM operation and maximum horsepower

Performance Characteristics:

  • Aggressive profile suited for dedicated race applications
  • Delivers strong top-end power and high RPM capability
  • Requires aftermarket valve springs and compatible valvetrain components
  • Best suited for engines with good compression and flowing cylinder heads
  • Recommended for manual transmission and high-stall torque converter applications

This camshaft is designed for serious drag racing applications and requires proper valvetrain setup including compatible lifters, pushrods, and valve springs. Professional installation and proper break-in procedures are essential 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

304

Usage

Strip

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.57

Intake Duration at .050 Inch Lift

259

Exhaust Duration at .050 inch Lift

266

Grind Number

296TLS-6

Basic Operating RPM Range

3500-7,500

Camshaft Material

Nitrided Cast Iron

Cam Type

Solid Flat Tappet

Camshaft Series

Tight Lash

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

B002EDX6AW

Engine Family

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

Exhaust Valve Lift

0.59

Advertised Intake Duration

296

This is my second order. Everything was great the first time. Sure it will be this time as well.

Why shop on Ebay, when there is Autoplicity. Cheaper prices than Ebay, Faster shipping and good return policies.

I called to see if it would ship before I needed it to go on a trip. I gave bad information about my order, but the employee went out of his way to track down my order and made sure that it went out ASAP. Thanks guys!!!<br><br>

This place was great. Great service they really helped mr out and were fast and extremely helpful.

Great prices and fast shipping!

I couldn't find this part anywhere! That's until I found Autoplicity! Thanks Guys!

Great prices! Wonderful customer service!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy