I have a guy who says he has a 1954 Plymouth transmission that has an O/D and will work on my 1953 Dodge 230 Flathead 6. this would go in my 1933 Dodge DP 6. I am in search of an Overdrive Transmission OR Doing the t-5 swap. any help is appreciated.
Maybe bump this thread to your other one ,,kinda like a build thread ,there was a lot of interest there.
It depends on what bellhousing is currently on your ‘53 Dodge engine. Stock Dodge bellhousing s thru ‘54 and are quite long because they were used with the semiautomatic trans and had to accommodate the fluid coupling and manual clutch. The Plymouth transmission will work with your Dodge 230 engine IF you also use a Plymouth bellhousing. Or, a bellhousing from any ‘55 thru ‘59 Flathead (Mopar) six. The manual trans itself is the same between Plymouth, Dodge and DeSoto, the difference being in the input shaft length is much longer on the Dodge and DeSoto to make up for the ‘dead space’ in the bellhousing on full manual cars lacking the fluid coupling.
You also have to consider that the 54 R10 will be a column shift whereas your 33 is a floor shift. You will either have to swap a column shift steering column in or build a floor shift conversion for the R10. Not impossible but it does take some work. I know that Moose has built a floor shift conversion for his A sedan with flathead Mopar so maybe he could give you some insight as to what is required.
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