Engines and Components› Engines, Blocks and Components

ATK ENGINES

HONDA 4SFT/6CYL AUTO 5-SPD

$5,101.12

SKU: A040 T3257AA

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

Advanced — 4+ hours

Description

The ATK HP291P is a 350 cubic inch Chevrolet base engine, compatible with OE 4-bolt main, 1-piece seal blocks from 1987-2000. It produces 330 horsepower and 380 lb-ft of torque, featuring hypereutectic pistons and ATK cast iron cylinder heads.

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 T3257AA

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