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Old 10-23-2016, 07:22 AM   #1
36coupe
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Default Picked up t170 for future use, have questions

I picked up a ford tremec 4 sp OD T170 transmission from a mid 80s truck yesterday.
I got it cheap and hope to use it in my 38 in the future.
I haven't checked the numbers yet but it probably doesn't have the best od ratio as it was mated to a 300 I6.
What do I need for a clutch, throw out bearing and pressure plate?
I am slowly rounding up all the parts that I will need.
Also what parts are need to convert the output to a torque tube drive shaft? Is there an adaptor plate that can be bought.
I know that it is not a stock question but I think people on this site understand how to do the conversions better than over on the hamb.
Thanks
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Old 10-23-2016, 08:56 AM   #2
rotorwrench
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Default Re: Picked up t170 for future use, have questions

There are a lot of threads on this site that cover the T170 conversions. There are a few posters that make some parts for this. The RTS model is generally the one to find. Just put T170 in the search box and you will find a few good ones.
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Old 10-23-2016, 09:03 AM   #3
Ol' Ron
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Default Re: Picked up t170 for future use, have questions

I have one in my truck, I think the OD is 36%. I running a 280 Ci "stock" flathead and the engine pulls great from 1500 up in OD. Just love it. I use a stock 10" clutch with the proper disk.
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Old 10-23-2016, 12:13 PM   #4
bgarrett
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Default Re: Picked up t170 for future use, have questions

Isnt that a 3 speed with overdrive? The 4 speed doesnt have overdrive
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Old 10-23-2016, 03:59 PM   #5
Steve/IL
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Default Re: Picked up t170 for future use, have questions

36coupe,

Below is a link to a gear ratio chart for the F-150 (T170) transmission. I recommend the overdrive ratio from the first transmission on the chart. Note that the two letters list in the first box for each transmission are found on a metal tag attached to the transmission case for easy identification.

https://www.fordbarn.com/forum/attach...8&d=1325958600

If this link doesn't work, do a Search on T170. You will find a link that works in one of the posts on this subject.
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Last edited by Steve/IL; 10-23-2016 at 04:06 PM. Reason: Link may not work
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Old 10-24-2016, 07:58 AM   #6
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Default Re: Picked up t170 for future use, have questions

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Quote:
Originally Posted by bgarrett View Post
Isnt that a 3 speed with overdrive? The 4 speed doesnt have overdrive
It's an odd beast of a trans, it has 4 speeds in the standard H pattern but 3rd gear position is direct drive and 4 th speed position is overdrive. Ford did this with a toploader case with the shift arms out the side, you'll see this as the 3 rd/4 th shift arm is upside down. And later in the. 80's with a shifter stuck out the top like a pre 39 Ford car trans.
Martin.
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Old 10-24-2016, 08:25 AM   #7
flatford8
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Default Re: Picked up t170 for future use, have questions

I've been looking for one. I'd like to go that route instead of the T5.... Mark
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Old 10-24-2016, 12:47 PM   #8
bgarrett
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Default Re: Picked up t170 for future use, have questions

I used the 1984-87 3 speed with overdrive in my avatar. I find them in U Pull Its with the straight six engines. $90. Found one in a 4 wheel drive
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