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BOSS 351 CYLINDER BLOCK 9.5 DECK BIG BORE
SKU: M-6010-BOSS351BB
The all new 351 9.5 deck block for big bore builds!
Same as M-6010-BOSS35195 except allows for bigger bore by deleting coolant crossover holes between cylinders
4.185" bore capacity (sonic check recommended), finished at 4.12" 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
Increased bulkhead material
Threaded core and galley plugs (straight thread port plugs with O-ring)
Requires special length ½" 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
Weighs approximately 195 lbs.
Great price and value
The foundation for big bore 9.5" deck projects
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