What is the main advantage of the BOSS 302 block's construction?

The BOSS 302 block is cast from diesel-grade iron and features added material in critical areas. This construction makes it significantly stronger than standard Ford OE blocks, designed to withstand higher stresses.

Can this block accommodate larger crankshafts?

Yes, this block is specifically designed for stroker applications. It can accommodate crankshafts with strokes up to 3.5 inches without requiring any grinding or clearancing of the cylinder walls.

What type of main bearing support does this block offer?

This block features 2-bolt main caps on the first and fifth main journals, and splayed 4-bolt main caps on the second, third, and fourth main journals. This configuration provides robust support for the crankshaft under demanding conditions.

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Specifications

Brand: Ford Racing
Part #: M-6010-BOSS302
UPC: 756122090855

Ford Racing BOSS 302 Cylinder Block

Name: Ford Racing BOSS 302 Cylinder Block
Brand: Ford Racing
SKU: ford-racing-ford-racing-boss-302-cylinder-block-t14-4365400
Price: 2772.93 USD
Availability: BackOrder

$2772.93

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Fits 1985-1995 Ford Mustang. This Ford Racing BOSS 302 Cylinder Block is cast from diesel grade iron for superior strength and is designed for stroker applications.

Key Features

Fits 1985-1995 Ford Mustang.
Cast from diesel-grade iron with added material in key areas for superior strength.
Features splayed 4-bolt main caps on journals 2, 3, and 4 for enhanced rigidity.
Designed to accept factory roller lifter guides and retainers.
Optimized cylinder wall length for stroker applications up to a 3.5-inch stroke without clearancing.
8.2-inch deck height, finished at 8.200 inches plus .010 to .015 inches.

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About this part

Product Details

This is the Ford Racing BOSS 302 Cylinder Block, a robust replacement designed for your 1985-1995 Ford Mustang. Ford Performance engineers have updated the legendary BOSS 302 and 351 blocks using modern technology, drawing from both production and racing advancements. These blocks have a proven track record worldwide, performing exceptionally on both the street and the track. By maintaining many of the original dimensions and features of the 289-351 Windsor-style engines, this block offers compatibility for a wide range of vehicles that originally used that engine family.

Built for serious performance, this BOSS block is cast from diesel-grade iron, a material chosen for its exceptional strength. Ford engineers have strategically added material in critical areas, making this block significantly stronger than any previous Ford OE block. It features splayed 4-bolt main caps on the 2, 3, and 4 main journals for improved rigidity under high loads, complemented by 2-bolt mains on the first and fifth caps. The deck height is precisely finished at 8.200 inches, with an additional allowance of .010 to .015 inches, and the main bearing bores are machined to their low limit for tight tolerances. This block is also optimized for stroker applications, accommodating crankshafts with up to a 3.5-inch stroke without requiring grinding or clearancing of the cylinder walls. It's designed to accept factory roller lifter guides and retainers, and includes NASCAR-inspired front oil feeds on both lifter galleries for improved lubrication.

This BOSS block also features a Siamese bore design with drilled coolant crossover holes, enhancing thermal management. All core and galley plugs are threaded with straight thread port plugs and O-rings for a secure seal. The revised cooling system passageways and increased bulkhead material further contribute to its overall durability and performance potential. This is a substantial upgrade for anyone rebuilding or building a Windsor-style engine for demanding applications.