ratrodcharle Posted October 24, 2019 Report Share Posted October 24, 2019 Will the floor shift type dodge truck transmission from the late 40s early 50's bolt up and work on my 1949 plymouth flathead six. The motor is in a 1917 roadster and I'm looking for a floor shift transmission. Will I need to change flywheel/clutch/ bellhousing also over to the dodge parts or will the dodge trans bolt up to my plymouth bellhousing/ clutch set up. Is the main shaft the same amount of splines on the plymouth clutch and the dodge clutch. Quote Link to comment Share on other sites More sharing options...
ratrodcharle Posted October 24, 2019 Author Report Share Posted October 24, 2019 Also is the imput shaft the same length plymouth vs dodge Quote Link to comment Share on other sites More sharing options...
allbizz49 Posted October 24, 2019 Report Share Posted October 24, 2019 Mr. Gasket and Hurst make floor shifters that would work. Just might have to do some modifying or fab for your car. Quote Link to comment Share on other sites More sharing options...
kencombs Posted October 24, 2019 Report Share Posted October 24, 2019 3 hours ago, allbizz49 said: Mr. Gasket and Hurst make floor shifters that would work. Just might have to do some modifying or fab for your car. I'm not aware of any current production shifter kits that work with selector transmissions. Olds, Pontiac and Mopar selectors have never been popular with the kit makers. Quote Link to comment Share on other sites More sharing options...
dpollo Posted October 25, 2019 Report Share Posted October 25, 2019 I cannot think of a worse swap . If you install a non synchro trans from a 1940s truck you will ruin the driveability your car and the tear up will reduce your resale value to scrap. instead consider an S 10 or similar 5 speed if that is what you want. but keep this in mind : The original trans in your car was one of the best in its day and can be fitted with a BW Overdrive found in Plymouths from 52 to 56 . This is a simple bolt for bolt swap, no tear up at all. Quote Link to comment Share on other sites More sharing options...
leadheavy52 Posted October 25, 2019 Report Share Posted October 25, 2019 Here is a ‘49 Dodge 4-speed truck trans in a ‘52 Plymouth. I bought the car like this and have since replaced the bellhousing and will be swapping to a ‘52 OD trans soon. You can see how much cutting has to be done to the floor to get everything to clear. In addition, the truck starter has to be used and it is about 15% larger than the car version and makes a nightmare of rerouting the oil lines to the filter (if equipped). Lastly, the trans isn’t synchronized, so double clutching, or grinding are about your only options. I am with this group in identifying and easier to install transmission. Quote Link to comment Share on other sites More sharing options...
Los_Control Posted October 25, 2019 Report Share Posted October 25, 2019 20 hours ago, ratrodcharle said: The motor is in a 1917 roadster and I'm looking for a floor shift transmission. I dont blame you for your choice, I think the 3 speed truck transmission would make a nice period correct hot rod. Be nice to see pics of it I imagine it would be the same trans as the earlier cars with the 3 speed floor shift. I also believe that in the past, that sometimes dodge trucks would use plymouth engines to get rid of last years inventory. I am pretty sure you wont have any problems, assuming that neither one was attached to a fluid drive. The bell housing clutch input shaft should all be the same. But I have never done this swap myself. Quote Link to comment Share on other sites More sharing options...
dpollo Posted October 25, 2019 Report Share Posted October 25, 2019 you may also consider a synchronized passenger car trans from 35 to 38 and you will need the bell housing which goes with it. Simple, strong and compared to the truck light weight. Quote Link to comment Share on other sites More sharing options...
Young Ed Posted October 25, 2019 Report Share Posted October 25, 2019 If you get a truck 3spd it will be syncro'd starting I think 1940. You would need to swap the bellhousing but I believe the clutch and flywheel could be reused. Quote Link to comment Share on other sites More sharing options...
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