Engines and Components› Pistons and Piston Rings
JE Pistons
400 SBC FLAT TOP
SKU: J001 329630S
Advanced — 4+ hours
Description
Constructed from 4032 alloy forged aluminum, this piston is sold individually. It is specifically designed to work with Chevy 23-degree cylinder heads that have 20/30 valve spacing. The piston bore size is 4.145 inches.
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.
Available on iOS & Android
Specifications
| Brand | JE Pistons |
| Part Number | J001 329630S |
Videos
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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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