Folks, I'm trying to track down the input shaft length for a 4 spd with the 2pc bellhousing behind a flathead V8. I'm on the lookout for a 3spd OD transmission, but it appears there's lots of different input shaft lengths..

bob

 

Which 4 Speed: Warner T-9 or Warner T-98?

What year is it?

What series is it? F1, F2, F100 or?

 

Sorry ND, I was typing in a hurry. I have a 1952 F1 with the light duty 3 speed and a flathead v8. I do not know what trans that is? I'd like to bolt in a 3spd OD trans but I'm not sure which one will work. That is why I'm trying to narrow it down a bit by finding the correct length. I had planned to get a hogs head from a 4spd, most of the tranny's I've been finding do not have the "bell"

Unless you happen to know off hand the correct length of input shaft I need to convert my F1 FH-V8an to an overdrive 3 spd Trans?? I've access to 6 1/2" and a 5 5/8" input shafts. Are there different thickness hogsheads?

Honestly , I may scrap the whole Idea and just wap the rear for a 3.25 or 3.00 9" I have the factory 4.27

thanks,

bob

 

anyone?

bob

 

B6C7017A .. Input Shaft / 9.30" O/A length

Fits: 1956 F100 w/a 3 Speed Manual or w/a 3 Speed OVERDRIVE Transmission.

 

wow that's a lot longer than I thought most I've seen were 6 1/2" or so.

thanks

bob

 

All the flathead input lengths are the same sorted by engine i;e; small v8 32-53, flathead 6, and bigblock flathead 337.
as for the 32-53 flatmotors there are multiple bellhousing combo's, 1 piece, and 2 piece
(two piece with attacheble tranny and two piece with removable tranny)

Techno Source for the 1932 thru 1953 Flathead Ford - there is a must have bellhousing guide on this site.

anyway they're the same thing only different.

Oh later - after 53 - can be used by trimming the input shaft end and/or enlarging the index hole.

 

Bob, input shaft on HD 4 spd (non syncro) is 5 3/4 inches. Measured from trans mounting surface to tip. BTW, a 3spd OD trans from a 49-53 car is a direct bolt up to a flatty........but it's longer and the mount is different.....plus they are getting hard to find......T/M

 

I can get one for a good price locally, but It does not have the "hogshead" and my truck trans is the 3spd. If I was to get a intermediate bell (hogshead) the one that bolts to the trans. I know where there is one that measures 5 5/8" how sure are you? Do you understand what I want to do. I want to bolt this up to my flathead.

bob

 

Bob, the car flathead 3 spd OD is a completely different animal.........it uses a one piece stamped steel bellhousing. It has a 4 bolt mount pattern like a later T-10, not the hogshead......if you have the matching bellhousing and clutch, it doesn't matter what the input shaft length is, it will bolt up.......if I can find all the parts, I'll try to post some pics. Btw, the input shaft length on my 3spd od is 6.00 inches......T/M

 

That seems to be the issue. All of the tranny's I've been finding do not have any bell. I want to use my flathead and my current clutch setup. I assumed unless it's an early lincoln unit with the cross-shaft I needed to truck hogshead. I found another trans that has a 6 1/2" inputshaft.

Did your truck come with one ore? I can see if I wasn't using the flattie, I could make just about any OD 3spd work.

bob

 

Not quite true.

The bell housing off the car may bolt up to the flathead engine, and the car OD transmission may bolt up to that bell housing, BUT, that bell housing is not useable in the 52 and earlier truck because the clutch pedal engages the throw out bearing with a rotating type shaft. On the car bell housing and clutch, the throw out bearing is disengaged by a fork which is pushed back by the pedals. They are in different positions on the housings and use a different motion.

So even though the drive train will all bolt up, the clutch pedal and actuation shaft are not compatible with the car bell housing.

What he will have to do is find a clutch cover to bolt onto the back of his flywheel cover that is off a 3spd heavy duty or a 4spd (since the clutch cover for for the 3 spd light duty is cast onto the transmission housing and gets tossed with the old transmission) AND that has the same back bolt up pattern as the OD transmission (might possibly be an adaptor plate); AND is the the same depth when assembled as the length of the input shaft on the transmission.

Here is a picture of the truck flathead and transmission:



And here is an auto flathead with the stock 3 spd (which IS interchangeable with the car OD transmission. Note the differences in position and type of clutch actuators:



This is pretty close to what it would look like. I think this is a Merc or Lincoln Set up. Note the cover to engine bolt pattern - 332 maybe. The rear mounting/crossmember will have to be moved and modified.

 

Thanks Julie, much better explanation even at this late hour. So I'm still back to the question how long does the input shaft stick out of the 4 spd tranny on a flatty v8? I started researching T98's and way to many lengths just for ford... Advance adapters has 4 or 5 listed..... I guess I should also ask the question do "hogsheads" vary in width?




bob

 

TEAA-7017-A .. Input Shaft / 9 11/16" long / Fits: 1953 V8 F100/700 w/a Borg Warner T-98.

Don't forget, you have to take into account the length of the collar (4 1/8" O/A length) that the T/O bearing rides on that is bolted to the front of the trans case.

You can buy a CD of the 1948/56 Ford Truck Parts Catalog from hipoparts.com for around 20 bucks.

DC sells reprints of the bound paper catalogs (Text/Illustrations) this CD was scanned from for $200.00! The CD version is the exact same thing.

 

I found a T89 OD trans locally Hour away. the owner measured "against the trans to end of shaft is about 5/5/8 inches and 2/5/8 inches from end of cone to end of shaft.and all parts are there." but no bell housing/hogshead.

bob