Mike B I may be wrong about those ratios and I understand what you mean ,the sm420 is atough gear box made for hard work. However for a street daily driver like a 3100 in modern traffic the saginaw works fine. Anyway my 3 handle fine. You can also have an overdrive !!
Agree, I also have a Saginaw in my '56 3100...works just fine!
Mike B
