Engines and Components› Engines, Blocks and Components

ATK ENGINES

MAZDA FS5A AUTO 5-SPD

$3,013.89

SKU: A040 T3639AA

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

Advanced — 4+ hours

Description

This ATK Engines High Performance Crate Engine is a Small Block Chevy 383ci, producing 435HP and 475TQ. It includes a short block, camshaft, timing set, cylinder heads, valve covers, timing cover, oil pan, oil pump, and flexplate. This engine is designed for applications that typically use a Small Block Chevy 350ci engine and may require modifications for installation. It is legal only for use on uncontrolled (non-emissions controlled) vehicles or for closed competition racing.

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 T3639AA

Videos

ATK Crate Engine Review! Reveal of Our New Chevy 383 Stroker!

ATK Crate Engine Review! Reveal of Our New Chevy 383 Stroker!
ATK Performance crate engine review

ATK Performance crate engine review
ATK HIGH PERFORMANCE 383 STROKER (HP101C)

ATK HIGH PERFORMANCE 383 STROKER (HP101C)
ATK High Performance HP55C Chevy 383CI Stroker 500HP

ATK High Performance HP55C Chevy 383CI Stroker 500HP

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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