rondig
Senior Member
Looking at buying an ih 7500 tractor unit with an ht530 325hp...I already own one with a 10 speed...power isn't great but it is ok....I am worried with a overdrive 8ll that it would be worse. Gear spread would be worse alao....it has 3.90 rears...never had an 8ll....am I worried for nothing?? I haul a 48 ft tri with about 35000 lbs on trailer....currently I use at mbe 4000 450 hp....for that trailer....my straight truck is an ht 530 10 speed 325 hp. Any thoughts?