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 12-685-5 Launcher Series Solid Flat Tappet Camshaft 248/252 SBC

(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 + 239 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-685-5
5 reviews
Sale Price

$325.95

Estimated ship date Friday, November 27

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 12-685-5 Launcher Series camshaft is a high-performance solid flat tappet cam designed specifically for Chevrolet Small Block engines. This aggressive camshaft features 248 degrees of intake duration and 252 degrees of exhaust duration at 0.050" lift, making it ideal for high-RPM racing applications and serious street/strip builds.

Key Specifications:

  • Intake Duration: 248° @ 0.050"
  • Exhaust Duration: 252° @ 0.050"
  • Solid flat tappet design for maximum durability and performance
  • Optimized lobe profiles for aggressive valve events
  • Engineered for Chevrolet Small Block V8 engines

Performance Characteristics:

  • Delivers strong mid-range to high-RPM power
  • Requires higher compression ratios for optimal performance
  • Best suited for modified engines with upgraded valvetrain components
  • Provides aggressive camshaft sound and performance

The Launcher Series is designed for racers and enthusiasts who demand maximum performance from their small block Chevrolet engine. This camshaft requires solid lifters (not included) and periodic valve lash adjustment. Professional installation and proper break-in procedures are strongly recommended to ensure 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 + 235 more models

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.483

Exhaust Valve Lift

0.483

Intake Duration at .050 Inch Lift

248

Exhaust Duration at .050 inch Lift

252

Basic Operating RPM Range

3,000-6600

Camshaft Material

Cast Iron

Camshaft Series

Launcher Series

Grind Number

LC2745

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.

Advertised Intake Duration

274

Camshaft Gear Attachment

3-Bolt

AMAZON ASIN

B000P5G6VC

Advertised Exhaust Duration

278

LOBE SEPARATION

107

Usage

Street/Strip

Engine Family

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

very good price fast shipping

I couldn't use PayPal but the order went smooth.

Found Autoplicity by doing Google search looking for Corsa Sport Axle Back exhaust for my 2008 GT500. By far the best price, even cheaper than other big companies with free shipping by far. Ordered them on Thursday afternoon and got them 24 hours later in NY with the standard shipping. Could'nt be happier.

fast, polite service when we had a question

Smooth easy process

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