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4l80e fitting problem

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Old 09-26-2016, 02:42 AM
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Default 4l80e fitting problem

I have a 97 hydromatic 4l80e. Has front and rear for cooling lines. The problem I'm having is the rear fitting (long one) won't screw in because it's hitting something in the Trans. Need help. Thanks


Old 09-26-2016, 12:42 PM
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you likely have the wrong thread. 97 they changed from -6 x 9/16-18 to -6 x 1/4NPS midyear.... I did the same thing lol.
Old 09-26-2016, 03:33 PM
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I do have the -6 1/4 fitting , my problem is that the long fitting is hitting something inside. Thread pattern is correct
Old 09-26-2016, 04:38 PM
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Do a google search, I don't have an exact answer but this has caused many burned up trans.
Old 09-26-2016, 06:10 PM
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Wrong Center Support at the very least, This is Bad.....Real Bad!! The trans will need to be torn down to see what all is wrong for your "Center Lube" Case by someone that knows what the hell their doing!!! It may end up cheaper to buy another core to build.
Old 09-26-2016, 06:22 PM
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Originally Posted by clinebarger
Wrong Center Support at the very least, This is Bad.....Real Bad!! The trans will need to be torn down to see what all is wrong for your "Center Lube" Case by someone that knows what the hell their doing!!! It may end up cheaper to buy another core to build.
Atleast I have warranty. I haven't even ran it yet. Sucks I have to take the transmission out. thanks
Old 09-26-2016, 08:37 PM
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Good luck, A warranty with the same builder that would do that in the first place is scary!
Old 09-28-2016, 08:31 AM
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Originally Posted by justablur1
Atleast I have warranty. I haven't even ran it yet. Sucks I have to take the transmission out. thanks
How bout you bring the car to him to take it back out as HE caused this problem in the 1st place!
Old 09-28-2016, 09:04 AM
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Originally Posted by wht/73
How bout you bring the car to him to take it back out as HE caused this problem in the 1st place!
I know. I'm going to call him to see what the hell. He built one for me before it was good. But this I wasn't expecting this
Old 09-28-2016, 04:37 PM
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Good thing you caught this even now. I recall a thread where the OP installed two short fittings and then burned up the trans.
Old 09-29-2016, 01:09 PM
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I cant remember when I had mine apart, is it possible for the center support to turn if the bolt is broken, or left out?
Old 09-29-2016, 07:26 PM
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Originally Posted by forcd ind
I cant remember when I had mine apart, is it possible for the center support to turn if the bolt is broken, or left out?
The Case Lugs hold it stationary.



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