Engines and Components› Engines, Blocks and Components

ATK ENGINES

RAM AS66RC RWD 6-SPD AUTO TRANS

$8,569.45

SKU: A040 T6703AA

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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 HP36 Chevy 383 Stroker Base Engine is an upgrade for 1996-2000 Chevy, GMC, and Cadillac trucks or SUVs with the 5.7L V8 Vortec 5700 L31 engine, providing 435HP and 475TQ. It features an OE roller block, Scat crankshaft and rods, and forged pistons. The ECM must be tuned, and headers are recommended for full potential.

Fitment

Fitment Guaranteed

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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 T6703AA

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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