Engines and Components› Camshafts and Valvetrain

COMP Cams

Magnum 253/253 Hyd Flat Cam Olds 260-455

$346.06

SKU: C007 42-237-4

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

Advanced — 4+ hours

Description

This Pro Street/bracket race cam is suitable for large Oldsmobile engines with 3500+ stall converters and low gears, featuring a radical idle. COMP Cams Magnum series cams deliver excellent high RPM power, are gentle on valve train components, and can be used with mild ratio rocker arms and traditional performance valve springs. They require converter and gear changes, prefer higher compression (9.5:1 and up), and larger Magnum camshafts may exhibit some sluggishness at low RPMs.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandCOMP Cams
Part NumberC007 42-237-4

Videos

Dyno Testing a Mondello 455 Olds Big Block - Horsepower S13, E8

Dyno Testing a Mondello 455 Olds Big Block - Horsepower S13, E8
Hand Porting Cylinder Heads on an Olds 455 Big Block with Legendary Joe Mondello- Horsepower S13, E6

Hand Porting Cylinder Heads on an Olds 455 Big Block with Legendary Joe Mondello- Horsepower S13, E6
69 Olds 442 with 455 / Crower Beast Cam 304H

69 Olds 442 with 455 / Crower Beast Cam 304H

Buy with Confidence

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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