Engines and Components Engines, Blocks and Components

ATK ENGINES

CHEVY 383 525HP MID DRESS

$9,930.83

SKU: A040 HP107M

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Description

This is a Chevy 383 Stroker Mid Dress Engine designed for high-performance applications. It is not a direct OEM replacement, but a crate engine for custom installations in vehicles that can accommodate a Chevrolet small block. This engine boasts 525 HP and 515 TQ. Key components include a Scat 4340 forged crankshaft and H-beam rods, forged pistons with 10.2:1 compression, a hydraulic roller camshaft, and ATK aluminum cylinder heads. It also features a Moroso 7qt oil pan, Melling oil pump, and a Holley strip dominator single plane intake manifold. Recommended components include a Proform 750CFM carburetor, Holley mechanical 110GPH fuel pump, Autolite #3923 spark plugs, and 8mm spark plug wires. Recommended oil is Conventional / Non Synthetic 10W30, with a timing of 34-36 degrees and a spark plug gap of .035”. It requires 91+ octane fuel, a 3500+ stall converter, and 1 ¾ headers. This engine is compatible with OE roller block 4 bolt main 1pc seal Chevrolet Small Block applications from 1996-2000.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 HP107M

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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