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Forums->Hot Heads Tech Talk->276 Desoto to BW R-10

st63
276 Desoto to BW R-10


New poster here....have a 50 Plymouth project car with a very tired flathead 6 and a later model 52 Plymouth 3 speed manual with Borg Warner overdrive. Tranny is in great condition, and I love the OD. Buddy of mine has a rebuilt 276 Desoto Hemi (stock 160 HP) that I'm awfully tempted to swap in, but not sure about the compatibility with the BW OD tranny. Seems to be conflicting info out there as to whether it will mate up or not. Does anyone have info on bellhousing or other compatibility issues? I think the tranny itself will stand up to the hp and torque of the hemi...just want a cruiser, not a racer...no speed shifting that column shift!
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on: Sat 26 of May, 2018 [20:02 UTC] reads: 6259

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Jack
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Re: 276 Desoto to BW R-10
on: Mon 14 of Jan, 2019 [15:23 UTC] score: 0.00
Another thing, the V8 wont clear the steering.

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Honestray
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Re: 276 Desoto to BW R-10
on: Mon 14 of Jan, 2019 [00:51 UTC] score: 0.00
> New poster here....have a 50 Plymouth project car with a very tired flathead 6 and a later model 52 Plymouth 3 speed manual with Borg Warner overdrive. Tranny is in great condition, and I love the OD. Buddy of mine has a rebuilt 276 Desoto Hemi (stock 160 HP) that I'm awfully tempted to swap in, but not sure about the compatibility with the BW OD tranny. Seems to be conflicting info out there as to whether it will mate up or not. Does anyone have info on bellhousing or other compatibility issues? I think the tranny itself will stand up to the hp and torque of the hemi...just want a cruiser, not a racer...no speed shifting that column shift!

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Honestray
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Re: 276 Desoto to BW R-10
on: Mon 14 of Jan, 2019 [00:50 UTC] score: 0.00
> New poster here....have a 50 Plymouth project car with a very tired flathead 6 and a later model 52 Plymouth 3 speed manual with Borg Warner overdrive. Tranny is in great condition, and I love the OD. Buddy of mine has a rebuilt 276 Desoto Hemi (stock 160 HP) that I'm awfully tempted to swap in, but not sure about the compatibility with the BW OD tranny. Seems to be conflicting info out there as to whether it will mate up or not. Does anyone have info on bellhousing or other compatibility issues? I think the tranny itself will stand up to the hp and torque of the hemi...just want a cruiser, not a racer...no speed shifting that column shift!

The Plymouth stick with OD can be bolted to the 276 DeSoto with all stock parts. Using the flywheel, clutch, bellhousing and related bits from any 1955 or 1956 Dodge or Plymouth V8 (does not matter which, poly or hemi or cubic inches) the trans will bolt up.

An alternative, but harder to find parts for, is to use a 1952/1953/1954 DeSoto or '1953/1954 Dodge Manual transmission setup (NOT a Semi auto). Those transmissions and related parts will work on your DeSoto engine and the transmission has the very long input shaft used on those models of manual shift.

Those engines were usually equipped with the semi automatic that had a fluid coupling AND a clutch, so the belhousing was quite long. Stick models used a long input shaft and related parts. But the Dodge/DeSoto full manual gear boxes are pretty hard to find.

Even if you already have the stick shift bell and flywheel, but not the matching transmission, you need the long input shaft, front bearing retainer and throw out bearing and collar, which will fit your Plymouth trans case and allow the use of your OD trans.

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st63
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Re: 276 Desoto to BW R-10
on: Tue 29 of May, 2018 [02:48 UTC] score: 0.00
Thanks for the detailed info....the 276 has the bellhousing with it, so that's a start.

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Jack
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Re: Re: 276 Desoto to BW R-10
on: Tue 29 of May, 2018 [14:49 UTC] score: 0.00
Manual tranny bellhousing?

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ron37
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Re: 276 Desoto to BW R-10
on: Sun 27 of May, 2018 [16:45 UTC] score: 0.00
Shouldn't be a problem. You need a V8 bellhousing. Either an old cast iron from the 50's or a later aluminum one form the 60's or later. Even if you have converted to 12V, you can use a pre- 1956 hemi 146 tooth flywheel and your 6V starter. If you have converted to 12V, since it is wound heavy wound, it will handle 12V. If using 12V, you could use a 1956 - 59 172 tooth flywheel and any late starter. Using the early cast iron bellhousing, you just bolt the bellhousing to the engine. You can check, but don't think you need the 3/4" aluminum spacer/adapter. Using a later small block aluminum bellhousing, you need the spacer, because the indexing engine and bellhousing pins are different. What I have done for using later 5 speeds behind a small block aluminum bellhousing, is using the original 3/4" spacer and drilling it and installing indexing pins to match the bellhousing to the spacer. Then buy a flywheel adapter from HH. Also cut the bottom below the engine off the adapter plate. You may have to shim the starter to the bellhousing or leave an 1/8" inch thick or so around the starter mounting area until you see what you need. Then you can use the original small block tin flywheel cover. You could save time and just buy the whole adapter kit from HH. I have also mounted the 5 speed AX-15 and similar trannies this way. Hope this helps. Also, if the steering is an issue, just do some hacking, chopping and adding u-joints to get there. Good luck.

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Jack
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Re: 276 Desoto to BW R-10
on: Sun 27 of May, 2018 [15:57 UTC] score: 0.00
Couldn't say about the tranny and bellhousing, but doubtful.
I do know that the flywheel wont. Crank bolt pattern is different.


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