Engines and Components Camshafts and Valvetrain

COMP Cams

Launcher Series 248/252 S-Flat Cam SBC

$394.95

SKU: C007 12-683-5

In Stock
In Stock
Ships by Jun 8
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Comp Cams 12-683-5 SBC Launcher Series Mechanical Flat Tappet Camshaft LB2745 features an advertised duration of 274 intake/278 exhaust and a duration at 0.050 inch lift of 248 intake/252 exhaust. It is designed for street/strip use in Chevrolet Small Block (SBC) engines from 262-400 cubic inches, manufactured between 1955 and 1998. This mechanical flat tappet camshaft requires valve springs and has an operating RPM range of 3200-6800. The valve lift with factory rocker arm ratio is 0.468 inch for both intake and exhaust, with a valve lash of 0.014 inch.

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Specifications

BrandCOMP Cams
Part NumberC007 12-683-5

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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