Engines and Components› Pistons and Piston Rings

JE Pistons

400 SBC DOME 4CC

$173.33

SKU: J001 329658S

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In Stock
Ships by Jun 7
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Description

The JE Pistons 329658S is a set of forged aluminum pistons designed for the 400 Small Block Chevrolet engine. These pistons feature a dome style with two valve reliefs and a compression height of 1.125 inches. They are made from 2618 alloy forged aluminum.

Specifically designed for Chevy 23-degree cylinder heads with 20/30 valve spacing, these pistons have a bore of 4.135 inches and a stroke of 3.750 inches. The piston head volume is -4.00cc, and they utilize a press-fit or floating wrist pin style with a 0.927-inch pin diameter. The top and second ring thickness is 0.064 inches, while the oil ring thickness is 0.218 inches. These pistons are sold individually and do not include piston rings.

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Specifications

BrandJE Pistons
Part NumberJ001 329658S

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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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