Engines and Components› Engines, Blocks and Components

ATK ENGINES

CHEV 383 PERF COMP/DYNO

$9,236.12

SKU: A040 HP55C

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The ATK ENGINES HP55C is a 500HP Chevy 383 Stroker crate engine, designed for performance upgrades and custom builds rather than direct OEM replacement. It's universally compatible with vehicles originally equipped with a Small Block Chevy engine (late 1950s-2000s), though modifications may be required. It may not work with power brakes or factory AC. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and other aftermarket parts.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandATK ENGINES
Part NumberA040 HP55C

Videos

Chris's custom ATK High Performance 383CI Stroker 515+HP

Chris's custom ATK High Performance 383CI Stroker 515+HP

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.

View Full Return Policy