Ford Racing Boss 351 Cylinder Block with a 9.2" Deck for Ford Mustangs.

A solid foundation for any 9.2" deck project.

Cylinder Block Features:
- 4.125" bore capacity, finished at 3.990" to 3.995" rough bore
- 9.2" deck height, finished at 9.200" plus .010" to .015"
- Maximum recommended stroke 4.00", clearance dependent on crankshaft/connecting rod mfgr.
- Splayed 4-bolt main on 2, 3, 4, main caps
- 2-bolt main on 1 and 5 main caps
- Main bearing bores finished to low limit
- 2.749" main journal diameter (stock 351C size)
- Finished lifter bores
- Machined to accept factory roller lifter guides and lifter guide retainer
- Revised oiling and cooling system passageways
- Siamese bore with drilled coolant crossover
- Increased bulkhead material
- Threaded core and galley plugs (straight thread port plugs with O-ring)
- Requires special length 1/2" head bolts (M6065BOSS) or head studs (M6014BOSS)
- Recommended with M6049X306/307/Z304DA heads
- M6051S331 or M6051CP331 head gasket recommended
- Weighs approximately 195 lbs.
- Great price and value
- Same as M6010BOSS35195 except with a 9.2" deck

*Not designed for production 302/351W or M6049Y302/Y303/X302/X303/X304/X305 cylinder heads.

Manufacturer Instructions

Customer Review Summary

Fits these Ford Mustangs:

• 1964.5
• 1965
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