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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Transmission Swap

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Old Mar 14, 2016 | 05:54 PM
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Transmission Swap

I am replacing my manual 3 speed overdrive Transmission with a C6 Automatic. Did Ford put C6 Transmissions in 1980 with 302 Engines ? And if they did is there a TV rod that has to be adjusted ?
 
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Old Mar 14, 2016 | 06:58 PM
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The C6 doesn't use a TV rod. Instead, it uses a kick down link. If you don't have the kick down link, as I don't have on Rusty, the transmission won't go into 2nd by flooring the throttle. Big deal - just pull the shift lever into 2nd.

And, Ford certainly used the C6 behind the 302:

 
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Old Mar 14, 2016 | 08:08 PM
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While Ford did make c6 trannies with the 300/302/351w bellhousing pattern, they are sometimes hard to find in 2wd versions. A lighter duty tranny is more common behind the 302 in a 2wd pickup, like the c5. And 4x4 c6 versions are more common also in the small engine pattern.
 
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Old Aug 13, 2016 | 06:18 PM
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Diagram

I have an '86 factory service manual. I can send you the diagram and adjustment instructions.
This site is terrible. Pop up junk and it posted this answer to the wrong thread.
 

Last edited by Joelsplace; Aug 13, 2016 at 06:21 PM. Reason: Wrong thread
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Old Aug 13, 2016 | 06:29 PM
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Here is a thought, if all you can find is a small bell housing C6 from a 4x4 and you are going to rebuild it any way go for it.
When you have it rebuilt just swap out the 4x4 out put shaft for a 4x2 out put shaft.


I did that to a GM TH400 I used in my drag car as I needed an AMC bolt pattern from a Jeep TH400.
Dave ----
 
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Old Aug 13, 2016 | 06:58 PM
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Originally Posted by FuzzFace2
Here is a thought, if all you can find is a small bell housing C6 from a 4x4 and you are going to rebuild it any way go for it.
When you have it rebuilt just swap out the 4x4 out put shaft for a 4x2 out put shaft.


I did that to a GM TH400 I used in my drag car as I needed an AMC bolt pattern from a Jeep TH400.
Dave ----
With the Ford tranny you have to tear down the whole thing like you said, but he would also have to find a tailshaft section to convert it to 2wd. GM trannies are easier in that repsect.
 
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Old Aug 13, 2016 | 07:56 PM
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Originally Posted by Franklin2
With the Ford tranny you have to tear down the whole thing like you said, but he would also have to find a tailshaft section to convert it to 2wd. GM trannies are easier in that repsect.
No you have to do the same thing with the GM's also, find a 4x2 out put shaft and tail housing. He can find/use any 4x2 C6 parts if the yoke is right for what he needs. May need to check if long or short out put shaft/housing. For my drag car I needed a short setup for less flexing.
And I think it is the same with any auto trany the output shaft is the last to come out and first to go back in on rebuilds.

I just wanted to give the OP person an option if all he could find was a 4x4 small bell C6 auto.
Dave ----
 
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