Engine - Boss 302 - Bare Block - 4.000 in Bore - 8.200 Deck - 4-Bolt Main - 1-Piece Seal - Iron - Small Block Ford

4.125" bore capacity, finished at 3.990" to 3.995" rough bore.
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
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/X307/X2/Z304DA/Z2 heads
Designed for use with the following heads-

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