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Automatic Transmission in a '72 F100

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Old Jul 19, 2010 | 09:04 AM
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Question Automatic Transmission in a '72 F100

I have two questions. First can someone tell me what I can do to identify the transmission in my F100? I believe it is stock, although prior to me someone moved it from the tree to the floor. Which leads me to my second question, I am having issues getting it into gear. I can put it into reverse, although I seem to really push in the gas to get it moving, then I have to slam on the brakes because it really starts moving. But I cannot seem to get any forward gear. Could this be because of the aftermarket floor shifter, or am I looking at a rebuild/swap for sure.
 
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Old Jul 19, 2010 | 09:56 AM
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My guess would be that you have a C6 trans. If it is a C6 it will have 17 pan bolts, if a C4 it will have 11 pan bolts.
 
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Old Jul 19, 2010 | 10:23 AM
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Thanks!
I had just found this page, but counting the bolts will be much easier. It's seriously dirty under there
 
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Old Jul 19, 2010 | 12:56 PM
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Ok, I counted 14, but it's possible I just missed a few...
 
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Old Jul 19, 2010 | 01:30 PM
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Ok, another question. Will any C6 Ford transmission work, or must it be specifically for the 360?
I've never rebuilt a transmission, so I'm trying to decide. Do I take this one to a mechanic and try to have it rebuilt or do I get another working C6 and just have it swapped out.
I could turn around and sell the other C6 to recoupe some of the cost...
Any thoughts?
 
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Old Jul 19, 2010 | 02:02 PM
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C6 must be from the FE family, as the bell patterns are different for different engine series.

I would think you have jumped to a conclusion about a rebuild.

You should make sure your linkage/cable set up is working properly.

You may wish to drop the pan, replace the filter, check the modulator and vacuum hook up. Most trans shops can do this for not a lot of money.

Your trans may be good.

C6s are common enough and old enough you should be able to get a firm quote on a rebuild or reman swapped out.

Rebuilding one is not a casual project. IMO unless you want a new hobby, have it done.
 
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Old Jul 19, 2010 | 02:55 PM
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Odd that you count 14 bolts. Could you check again? Is the pan an almost square shape or like an "L" shape?
 
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Old Jul 19, 2010 | 04:33 PM
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An L shape, I looked up the pans online. It looks like the C6 pan, but there is a piece attached that I think is covering up the bolts I missed.

Thanks for the confidence in the C6. I'm going to find a local shop to look at it. Hopefully I can at least get it looked at this week. I don't want to do the rebuild myself, I know where my limits as a hobbyist are
 
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Old Jul 19, 2010 | 10:50 PM
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Good to know then, good to know now:

YouTube - Eastwood- A Man's Got to Know his Limitations
 
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Old Jul 20, 2010 | 04:19 PM
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Well it wasn't that bad after all. Apparently it needed a "vacuum advance" ? Sorry if that's wrong, the phone call was hours ago and I've been busy at work. Anyways only 260 for parts and labor, including the tow. A lot less than I figured I was going to be spending, and it's done! So, 9 days after bringing it home I have a running and drivable 1972 F100, woohoo! Thanks for all the help guys. Now the fun stuff starts, getting it cleaned up, replacing any broken/missing trim and seeing about a paint job.
 
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