According to the book I have, there were 2 ratios available for the 3/4 floating rear. 3.54 and 4.33. This is similar to my 33 that is powered by a 4 cyl. You mash the pedal to the floor and wait. In low gear it would probably pull a house down. If you can find a 3.54, it might help.
My 34 has the full floating rear and has the ratios 5.14 and 6.6 available. I switched the rear axle from a 6.6 to 5.14.