SBC IR/BLK 4.5 9.500 4.180 350 55 C

Name: SBC IR/BLK 4.5 9.500 4.180 350 55 C
Brand: Dart
SKU: D00Q 31521333-55
Price: 6330.78 USD
Availability: InStock

$6,330.78

SKU: D00Q 31521333-55

Special Order

Ships in 4–6 weeks

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Non-Returnable Item

DIY PRO SHOP

Professional / shop required

Description

The Dart 31521333-55 is an SBC Race Series Aluminum engine block with a 4.500" bore spacing and 400 Main 55mm Cam. It is designed for advanced engine builders and maximum competition in applications like unlimited late model and off-road trucks. This block requires special 4.500" cylinder heads and components due to its spread bore space.

Fitment

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Specifications

Brand	Dart
Part Number	D00Q 31521333-55

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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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