Big Ben - 2/18/2017 12:38
twraska - 2/18/2017 07:25
Check the wheelbase length as well. We had a 6420 with a 4 cylinder engine, neighbor had a 6415 (I think that was the number) with a 6 cylinder engine and a little longer wheelbase. His road much better than ours.
A 6415 would be a four cylinder and the same length as a 6420. The 6615 was the smallest six cylinder tractor with the longer wheelbase.