Ford Racing BOSS 351 Engine Blocks

Product images may differ from actual product appearance.

The legend is reborn with this all new Ford Racing 351 BOSS block. The BOSS 351 is stronger than the original and available with 9.5" or 9.2" deck heights. Made from diesel grade heat treated cast iron with a splayed 4-bolt main caps (mains 2, 3 & 4). Blocks have finished are designed to accept factory roller lifter guides and lifter guide retainers & feature increased bulkhead material for strength.

Features & Benefits:

Siamese Bore with Drilled Coolant Crossover

Threaded Core & Galley Plugs

½" Head Bolt Threads

Maximum recommended stroke 4.250"

Main Bearing Bores Finished to Low Limit

Finished Lifter Bores

Revised Oiling & Cooling System Passageways

Siamese Bore