At least im not the only one who talks before he thinks.

 

I think you would need a bellhousing from something like a 54-56 f750/f800/f900 to bolt up to the '54 239.They had the same pattern as the y block and accepted the large 5 speed trannys.

 

I've still got a rebuilt and running 337 Flattie here in Denver, if anyone is interested. Also I've got the above trannie to go with it...slim

 

Well now that we are all on the 5-spd OD topic:


Would any of the three(light, medium, and heavy duty) 5-spd OD(not direct drive) trans from the 1956 model year--once again only in the larger trucks--fit physically into an F-100? Is there a chance they'd bolt up to the 223 I-6, or the 272?

I'd love to have one because their 2nd gears are low enough to act as a 1st, and since they are synchronized, it would not only make for easier downshifts to "1st(2nd), but would also help cruising on the highway with the OD 5th gear.

I think the 5-spds only came hooked up to the 302 or 332 in '56 though.......

 

I believe the bellhousing from a '56 332 has the same pattern as the regular 272 y block,so it should be no problem to mount the big truck trans to a 272

 

^^Good to know! Thank you.

 

I have the bellhousing for the y block ford to use this 5sp OD transmission including the flywheel, disc, pressure plate and clutch fork. I also still have the trany if anyone is interested. Ford used the y block with the parts to use this transmission in the 700 for a few years and anyother of their HD tranys of that era.

 

Oh yea I have a truck just waiting for an 5 OD allthough being non sync
I dont care. These are ment for F7 & 8s. so anybody thinking about
F6 & under there will be driveshaft issues and pilot bearing issues, and
I dont think smaller Y blocks or something has a big enough crank bore
for the big roller bearing pilot I think the input shaft is around .750 or
larger and memory thinks the U joints were spicer 500X way bigger than
F6- F600s. So I will be interested. Sam & Sons

 

Should be able to have a pilot bushing machined to fit if needed and any drive line company can put a drive shaft together with the needed ends. The Y blocks in the 54 F700 used a different pilot bearing then the larger truck engines, don't know the difference but shows a different part number.

 

I even have the drive shaft for that transmission. Interested? PM me

 

Just wondering if you ever attempted that swap? I have a line on a 5 speed from a 68 IH for my 53 F350 and was just going through the motions to see if it was similar? Any way to reference it?

Thanks

Brian

 

I never did the swap because I never had the 5 speed to begin with. I am still hunting one close to me!

 

I would measure the input shafts before commiting to buying. (T34)

 

Its on the bench so I can take some measurements,anybody have the numbers on a tock 4 speed anywhere to compare? I am blown away by the knowledge on this site so I figure it never hurts to ask. It would be good to know if these are an option for our trucks.

What I know so far is that in an IH,you have to swap the flywheel and use a different bellhousing than you do with the 4 speed when converting. They are also available in a 5 speed direct and a 5 speed over.

B

 

Even in an IH, the 4sp. and 5sp. use different bellhousings. The flywheel is huge, will dang near knock you out if ya ain't careful....don't ask how I know, lol. Anyway, a smaller Ford flywheel will be needed to fit a Ford bellhousing. (and starter)

It would be an interesting swap to see.... won't be easy, I have a feeling.