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360 block,i'd go with 340 better and stronger..but any way i've posted this a few times,,4" crank,40 over bore,eddie heads not even touched,750 hp carb,4.30 gear 29" tire w a 3500 stall treemaster conv..motor made 504hp at 5800rpm and 546lb'S OF torque 418ci went 10.80's in a 3200 dart sport..cam was flat tapped bullit made it 255/255 @ 50 588 lift


Your math is out a bit. 418 does not = 360.





He said that he would go with a 340....340,.040 = 418"!!!!!


whats a 40 over 340?.. 345?
Mike you forgot the 4" crank that was never installed at the factory. 4" crank = not stock anymore.