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CHEVY 400 MAIN 2PC REAR SEAL COMPETITION SUPERLIGHT ROTATING ASSEMBLY BALANCED

$5,655.00

SKU: S01L 1-40578BI

In Stock
In Stock
Ships by Jun 8
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

SCAT’s sales staff will reach out to confirm your rotating assembly order and provide a delivery lead time, which is typically 2-3 weeks. SCAT Chevy 400 - 377 Forged Rotating Assembly - 1-40578BI includes a 4340 Forged Superlight Crankshaft, Ultra Q-Lite H-Beam Connecting Rods With 7/16" Cap Screws, Mahle Premium Pistons, Rings, Rod & Main Bearings, Internal Balanced. 400 Main, 2-Pc Rear Seal.

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

BrandScat
Part NumberS01L 1-40578BI

Videos

Building a High RPM 400ci SBC to Replace Broken "Compression Obsession" - Engine Power S10, E6&7

Building a High RPM 400ci SBC to Replace Broken "Compression Obsession" - Engine Power S10, E6&7

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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