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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
5 psig @ redline on stock engine
860 EXHAUST 126 172 211 245 270 318 338 351
SS SPECIAL DECK HEIGHT MACHINE SPECIAL DECK HEIGHTS
Easily Repaired 5° Intake Flange Available
DART BIG BLOCK CHEVY BIG M SPORTSMAN 9.8" DECK 4.5" BORE BLOCK 31223444 5 psig @ redline onCALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. Dart BBC Big M SPORTSMAN BLOCK #31273444 Main Caps: Ductile Iron Standard Main Bearing Diameter Deck Height: 9. 800 Cylinder Bore Diameter: 4. 500 (made to hone to 4. 500) The Dart Big M Sportsman block was designed to be a more affordable version of the highly popular Big M. The Sportsman block is fitted with ductile iron 4 bolt main caps, and features a redesigned lubrication system that oils all of
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