The legend is reborn with the 302 big bore block! Stronger than the original! Block is Ideal for both high horsepower and endurance applications
- 4.125" bore capacity, finished at 4.115" rough bore. Also available in standard bore version, part number: M-6010-BOSS302
- 8.2" deck height, finished at 8.200" plus .010" to .015"
- Designed with optimized cylinder wall length for stroker applications up to 3.5" with no grinding or clearancing. (Depends on crank/rod manufacturer)
- Splayed 4-bolt main on 2, 3, 4, main caps
- 2-bolt main on first and fifth main caps
- Main bearing bores finished to low limit
- Finished lifter bores
- Machined to accept factory roller lifter guides and lifter guide retainer
- Fits factory 1979 - 1995 Mustang oil pan with custom oil pickup tube, part number: M-6622-BOSS302
- NASCAR inspired front oil feed on both lifter galleys.
- Revised cooling system passageways
- Siamese bore
- 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
- Designed to be compatible with the original 302 and 351W blocks and includes the following features:
- Designed to use stock type timing cover, timing Cover M-6059-D351 recommended (includes fuel pump provision)
- Fits factory Mustang oil pan with custom oil pick-up tube M-6622-BOSS302
- Retains clutch cross shaft pivot hole
- Original Style oil filter location
- Original motor mount boss locations
- Original bell housing pattern
- Weighs approximately 163 lbs.
- Great price and value
- The foundation for 8.2" deck projects
Proven performance - used in Ford Racing sealed 347cid race engines and Ford Racing high performance crate engines, a proven winner out of the crate and thousands of laps before rebuild.
