Engines and Components› Engines, Blocks and Components

ATK ENGINES

CUMMINS ISB-325 DROP-IN HEAD STUD

$17,002.78

SKU: A040 HM520S

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Special Order
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Description

The ATK SP22 Ford 520CI Stroker Short Block features a seasoned OE block from 1988-1992 with a 4.400” x 4.300” bore/stroke. It includes a Scat 4340 forged internal balance crankshaft, Scat 4340 H beam rods, and 2618 forged -38cc dished pistons.

Fitment

Fitment Guaranteed

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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.

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Specifications

BrandATK ENGINES
Part NumberA040 HM520S

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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