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COMP Cams 12-518-5 Drag Race 270/278 Solid Flat Tappet Camshaft for Chevy 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)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-518-5
7 reviews
Sale Price

$325.95

Estimated ship date Friday, November 27

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Product Details

The COMP Cams 12-518-5 is a high-performance solid flat tappet camshaft engineered specifically for drag racing applications in Chevrolet small block engines. This aggressive camshaft features a 270/278-degree advertised duration split, delivering maximum top-end power for competitive racing environments.

Key Specifications:

  • Advertised Duration: 270° intake / 278° exhaust
  • Duration at .050": 224° intake / 230° exhaust
  • Valve Lift: .462" intake / .480" exhaust (with 1.5:1 rocker ratio)
  • Lobe Separation Angle: 110°
  • Solid flat tappet design for maximum durability and valve control
  • Optimized for drag racing and high-RPM applications

Performance Characteristics:

  • Power range: 2,500 - 7,000+ RPM
  • Aggressive exhaust note and choppy idle
  • Requires aftermarket stall converter (3,000+ RPM recommended)
  • Best suited for manual transmissions or performance automatics
  • Designed for use with performance valve springs and upgraded valvetrain components

This camshaft is ideal for dedicated drag race builds where maximum power output takes priority over street manners. Proper valvetrain components including performance valve springs, retainers, and pushrods are required for safe operation at high RPM. Professional installation and proper break-in procedures are strongly recommended.

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

316

Advertised Intake Duration

300

Basic Operating RPM Range

4,700-7,500

Usage

Strip

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.577

Intake Duration at .050 Inch Lift

270

Exhaust Duration at .050 inch Lift

278

Grind Number

300F-6

Camshaft Material

Cast Iron

Camshaft Series

Drag Race

Cam Type

Solid Flat Tappet

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

Intake Valve Lift

0.58

Engine Family

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

AMAZON ASIN

B000P5B6M6

this is my new home... very cool site, beat summit and jegs by $20 to $30

Great customer service. Fast order processing. Hassle free transaction.

Very fast shipping, received it Monday when I ordered it on Thursday. Thanks!

Autoplicity is awsome!! lowest prices.. fast shipping great customer service.. this is hard to find in todays world!!

EASY SHOPPING, FAST CHECKOUT, FREE GROUND SHIPPING. CAN'T BE BEAT!!! A+ EXPERIENCE!

Fantastic ! Ordered a Weather Tech Cargo Liner for my 2012 Ford Explorer. Price was $60 less here than ALL other sites on web. I was skeptical that this was going to be a counterfeit -- as the price was too good to be true. I was extremely happy to receive the genuine product as I expected in less than a week -- and for $60 less than the competitors ! GREAT VALUE and great service ! I will definitely be back !!

GREAT PRICES FAST SHIPPING WILL UPDATE ONCE PRODUCT ARRIVES

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