Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

6779 PONTIAC 400 ROD 6.630 DCUP +14CC 2V ICON PREMIUM FORGED PISTON SET

$107.51

SKU: U00B IC891.STD

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The United Engine & Machine Co IC891.STD is a set of forged pistons designed for engine performance. Constructed from 2618 Alloy, these pistons feature a 14cc dish and a 4.120-inch bore. They have a compression height of 1.720 inches and a rod length of 6.630 inches.

The compression ratio varies depending on the fuel octane: 9.9:1 for 71 octane, 8.6:1 for 87 octane, and 8.0:1 for 96 octane fuel.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B IC891.STD

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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