Re: 1940 180 Econo-drive

Posted by Owen_Dyneto On 2010/6/30 22:29:12

Not disagreeing with Jim's comments, just let me add that a 1941 senior w/o overdrive would probably have a 3.92 rear axle ratio which will permit comfortable cruising at 60 mph or so. Not quite sure what axle ratio of 1940 senior w/o OD would have but the 356 engine is shorter stroke than a 39 Super and would be more comfortable at higher speeds. Even my 34 Eight with a 4.69 rear (and 17 inch tires) is comfortable at 45-50 (but not much more). Also remember that the OD-equipped cars usually had a different rear axle ratio than those w/o it; you don't necessarily have to change the ring & pinion, but the vehicle will have better driving flexibility if you do.

I think a lot depends on what your intended uses are for the car and what kind of highways it will be driven on.