F150 conversion

F-150 has an aluminum case . Should not be to much heavier than a Model A transmission . I do not have an extra support on my F-150 .
 
it is much heavier, and should be supported (float a motors come with a rear support for a stock A.) Just that it has an alum case means nothing the internals are 3X the mass of a model A trans. that's also why the f150 trans don't fail. we have done over 150 no come backs.( sorry some of those hill climb guys twist u joints. ya you know who you are!)
 
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I have been running one for several years that was done by one of our club members. It is great. I have a 29% 4th gear, but they have 4 different ratios all the way down to 21%. It doesn't climb very well, and you need to be going at least 45 to keep it from lugging.
 
For what it is worth:
When i did my f150 conversion i weighed the f150 transmission (71 lbs)
and then the stock 1930 model a transmission (38 lbs) and figured the 33 pound difference was not a major concern as i also reduced the flywheel weight by 20 pounds. So far, and 2500 miles, i have yet to experience a problem. I certainly would add the additional support if it is warranted.
 
I agree with MurphyJ. 33 pounds doesn't warrant an extra support. I did my own F150 conversion and five thousand miles and NO problems. My engine crank handle stills fits through and engages the crank.
 
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