Can't get transmission high enough do to 3-4 rod

I just put a rebuilt motor and a A833 transmission the 3-4 rod hits the bottom of the tunnel so I cant get the transmission hi enough to put the crossmember in this is a 1974 dodge dart sport 360 it had a 3sp manual trans from factory what is causing this o I had put the shift mechanism and shift linkages on before installing motor and transmission as 1