Ford Transmission Wisdom Needed

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Jun 16, 2021 | 01:16 PM

oldshortbed

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7th Gear

Joined: Jun 2021

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Ford Transmission Wisdom Needed

Hi new to the FTE and forums so if this is in the wrong section my apologies,

I have a 1964 F100 that I have stuffed with left over parts that I had laying around. The engine is a Windsor V8 221 from a 1962 Ford Fairlane with the 2 speed Ford-O-Matic with an integrated bell housing. Everything is in the truck and running, but I don't have the drive shaft. Can anyone tell me what the spline count is for this transmission so I can order the yoke ?

Thank you

Jun 16, 2021 | 04:53 PM

dubya TF

More Turbo

Joined: Mar 2018

Posts: 610

Likes: 42

From: Lacey

You should be able to see the tip of the output shaft in the tail housing and count the splines to verify but I believe 25 is the number.

Jun 20, 2021 | 09:35 AM

oldshortbed

Thread Starter

7th Gear

Joined: Jun 2021

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Quote:

Originally Posted by dubya TF

You should be able to see the tip of the output shaft in the tail housing and count the splines to verify but I believe 25 is the number.

Thank you Dubya TF,
You are absolutely correct it is 25 spline. I got a few hours yesterday to pull the truck out and look. I just made one mistake, I never measured the thickness of the shaft. Seems like Ford made a 1 1/2 and 1 3/8 shaft. Any idea what the shaft thickness should be ?

Jun 22, 2021 | 09:24 AM

dubya TF

More Turbo

Joined: Mar 2018

Posts: 610

Likes: 42

From: Lacey

Maybe it's just me but since you have a SBF why not swap in a C4 to get a good reliable 3 speed behind your 221?

Double or triple check that you have an aluminum case too. The link below has some tips on identification of this model transmission.
Ford-O-Matic Transmission | Hemmings

Jun 22, 2021 | 04:04 PM

oldshortbed

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7th Gear

Joined: Jun 2021

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Quote:

Originally Posted by dubya TF

I thought about swapping it out. It don’t think the two speed is going to like the extra power from the Twin Turbos. Not like the 221 is a huge power producing engine but it dose have some goodies on it. The build was not exactly well thought out but it was put together cheap for fun and morphed into what it is today. It runs better then I could ever imagined, just have not been able to put it in gear without the driveshaft.

The biggest problem is the C4 5 bolt bell housing are expensive and I have not been able to find one. But I agree the parts are limited on the 2 speed. 🤪

Last edited by oldshortbed; Jun 22, 2021 at 04:23 PM.

Jun 23, 2021 | 04:19 PM

PROSTOCK

Cargo Master

Joined: Feb 2004

Posts: 2,061

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From: Central Texas

A twin turbo 221 will smoke either of those transmissions(if not itself first), depending on the setup. I had a C5 behind my old 302 that raced and it was all it could take.