Buying online Dart 31263344 Big M 9.800" / 4.250" Big Engine Block for Chevy We added two slotted head stud bosses on both sides of the lifter valley so you can use studs instead of hard-to-install bolts to take the place of
Dart 31263344 the "missing" head bolts The Big M Sportsman block was designed to be an affordable, powerful engine block Specifications: Standard main size, 9.800 deck height, 4.250 bore, ductile iron main caps. Cast from premium iron alloy. Proven technology tested for the race track and for the street. ...
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