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COMP Cams 12-505-5 Tight Lash Solid Flat Tappet Camshaft Chevrolet Small Block - 254/259

(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 + 240 more models)

Part of: COMP Cams Tight Lash Solid Flat Tappet Camshaft Chevrolet Small Block

Other options in this family: COMP Cams 12-506-5 COMP Cams 12-504-5 COMP Cams 12-500-5 COMP Cams 12-511-5

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-505-5
10 reviews
Sale Price

$325.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-505-5 is a high-performance solid flat tappet camshaft designed specifically for Chevrolet small block engines. This tight lash camshaft delivers aggressive performance characteristics with 254 degrees of advertised intake duration and 259 degrees of advertised exhaust duration, making it an excellent choice for street/strip applications and high-revving performance builds.

Key Specifications:

  • Advertised Duration: 254° intake / 259° exhaust
  • Duration at .050": 212° intake / 218° exhaust
  • Valve Lift: .447" intake / .455" exhaust (with 1.5:1 rocker ratio)
  • Lobe Separation Angle: 110°
  • Camshaft Type: Solid flat tappet
  • Tight lash design for improved performance and durability

Performance Characteristics:

  • Idle: Choppy, aggressive performance idle
  • RPM Range: 1,800-6,000 RPM
  • Excellent mid-range to upper RPM power delivery
  • Optimized for performance headers and higher compression ratios

This camshaft requires solid lifters (not included) and periodic valve lash adjustment. The tight lash profile reduces valve train wear while maintaining the performance benefits of a solid lifter design. Professional installation and proper break-in procedures are recommended 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 + 236 more models

Advertised Exhaust Duration

288

Advertised Intake Duration

284

Usage

Strip

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.54

Intake Duration at .050 Inch Lift

254

Exhaust Duration at .050 inch Lift

259

Grind Number

284BTL-6

Basic Operating RPM Range

3200-7,000

Camshaft Material

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

Engine Family

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

Exhaust Valve Lift

0.55

AMAZON ASIN

B000CEQDFU

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