Engines and Components› Engines, Blocks and Components

ATK ENGINES

CHEV 383 PERF BASE ENGINE

$7,481.76

SKU: A040 HP55

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Special Order
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Description

The ATK HP55 is a Chevy 383 Stroker Base Engine producing 500HP. It is a bullet-proof street-strip engine with a lopey idle, designed for high performance applications. This engine may require modifications for proper installation and might not work with power brakes or factory AC in some vehicles. The oil pan configuration has known incompatibilities with certain classic Chevrolet models like Chevelles, Corvettes, and 1962-1967 Chevy IIs.

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

BrandATK ENGINES
Part NumberA040 HP55

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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