1939 tranny into a 1932 4-banger Will a 1939 transmission directly swap into my 1932 pickup behind a 4-banger?
I love the way the pickup runs and drives but it shifts miserable. I have a 1939 and I believe it would be worth the effort to have smoother shifting. Thanks........ Richard |
Re: 1939 tranny into a 1932 4-banger No, but the 39 gears will fit in your 32 case.
Bob |
Re: 1939 tranny into a 1932 4-banger 2 Attachment(s)
Quote:
Charlie Stephens |
Re: 1939 tranny into a 1932 4-banger Thanks guys, now I have a clear direction to go.
Richard Grace (gajeepguy) |
Re: 1939 tranny into a 1932 4-banger I would not take the gears out of your '39 transmission and put them into your B case. The '39 is worth too much as is. I'd find a post '39 side shift and use those gears ... you can usually find a side shift for 1/4 or less than the value of the '39. Even after buying a "39" shifter or a 3" fork, you're still ahead.
I also suggest being careful to find a transmission with a 16 tooth MDG since the B case is not designed for easy installation of the 15 tooth. Hope Charlie agrees on these added fine points. |
Re: 1939 tranny into a 1932 4-banger Hoop, can I use a post '39 floor shift out of an F-1 pickup?
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Re: 1939 tranny into a 1932 4-banger the later gear set, 39 and up, has a wider shift fork to match it. so yes, the pickup shifter should fit. check van pelts 39 transmission page and you will know it all. no one mentioned yet, it is tricky to get the later gears in your b case. sometimes even a little grinding in the shoulder of the deep part up front depending on your casting. certain installation order, etc. i've never done it, but have some B's, and read up on it awhile back. do some searches here and at the hamb, it can be done. have fun, skip
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Re: 1939 tranny into a 1932 4-banger Richard, pickups into the 40's continued to use a floor shifter that was the same as the '39 car. Main PU differences were the introduction of the open drive with a longer main shaft and different rear bearing retainer as well as the later, deeper case.
The "grinding" required on early cases when fitting later gears that skip mentioned is one approach when the 15 tooth MDG gear set is used. The 29 tooth cluster that goes with 15T is slightly taller and causes interference during installation when the MDG is installed with the bearing fitted. Find a set with a 16T MDG. |
'39 Ain't What It Used To Be! The guys did a pretty good job for the OP. I disagree with HOOP on the point where the 39 trans is too valuable to steal the gears. Out west the popularity of a 39 like trans is waaay down, leaving me on a pile of them that are slow sellers. Now this may be a regional thing, but the use of BW T5 transmissions has taken the heat out of that 39 trans market. Guys like Max Navarro who did business in these transmissions are now doing better selling Max's book on that subject. Almost like price fixing, the needed components sell for some pretty low prices these days. The current harder to get includes double detent shift tops with the 91 fork. Really good main shafts with the pin can be tough or easy depending. Cases seem to be locked at a $75 price. No reason to use less than the best there. I'm sure you sharpies out there can do much better but you have to get out there to score. Not everyone wants to or can do that. My current projects are late geared Model B cases with the the appropriate rear retainer. Many Model A drivers now admit to the faulty design of the poorly supported Model A flywheel housing that always cracks. If they're running a B engine the smarter setup is the B trans(or a well geared S10 T5). Good luck: Fred A
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Re: 1939 tranny into a 1932 4-banger "... slow sellers?"
(There goes my damned retirement plan.) |
Re: 1939 tranny into a 1932 4-banger Quote:
1) Open drive pickup transmissions have a different main-shaft (length) and spline count than the torque-tube based 39 trans. (Don't have an example picture to share - but I bet the VanPelt site goes into it). Given the above, I'm not sure if there is a u-joint that allows you to use the open-drive main-shaft with a close-drive torque-tube and associated drive shaft. I'm not an expert, so I'd surely find this out first (depending on your rear driveline setup). Take care, Dale |
Re: 1939 tranny into a 1932 4-banger here's a long thread to read, the 32 trans rebuild is in there somewhere, step by stephttp://www.jalopyjournal.com/forum/threads/1932-pickup-rebuild-thread-updated-11-21-15.970252
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Re: 1939 tranny into a 1932 4-banger I have a B engine and trans in my 31 coupe, I installed gears out of a side shift trans and used 39 top in my B case, The front shaft is a little tight going in, if I remember right you have to install the front bearing after you get the front shaft in, I built it about 12-13 years ago, CRS. Made the hand brake bracket out of a piece out 2in.angle iron. I like to let people drive it that own a stock A, they caint believe how smooth it shifts. Walt
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