The legend is reborn with this all new 351 block! Stronger than the original!
• 4.125" bore capacity, finished at 3.990" to 3.995" rough bore
• 9.5" deck height, finished at 9.500" plus .010" to .015"
• Maximum recommended stroke 4.250", clearance dependent on crankshaft/connecting rod manufacturer
• 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 M-6065-BOSS or head studs M-6014-BOSS recommended with M-6049-X306/307/Z304DA heads
• Designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads. Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads
• Uses common OD cam bearings M-6261-J351/R351
• Unique cam plug M-6026-S351 included
• M-6051-S331 or M-6051-CP331 head gasket recommended
• Weighs approximately 205 lbs.
• Great price and value
• The foundation for 9.5" deck projects

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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