Hi, I am a newbee and hope I posted in the right spot or havn't repeated a question, I've looked around best I could. Here is the deal: I just bought a one owner 72 Scout with a 258 and an automatic. The vehicle supposedly has 30k original miles. The owner said it was driven into the barn 22 years ago where it has sat. I have gotten her running and put it in reverse and find that I crawl at a true snails pace on a slight down grade turning 3,000 rpm. Putting it in any of the 3 drive gears gits me nowhere going back up the lane. It is as if I am in nuetral. My question: is the tranny clearly shot? Is there anything that can be done to a tranny that sat for so long to flush it out and free up the valves and such. I basically am curious if anyone has faced this and found an easy tune up fix. Also, if I do have to replace it, what auto trannys bolt up to the 258. My research leads me to think that the IH v8s have different bolt patterns and May use a differnt variation of the 727. I can get a 727 from a 77 with a 345...will this work? Sorry for the long winded question and thanks for any help!
72 scout auto trans sitting for 20 years
- Thread starter mlilli33
- Start date
Scoutboy74
Moderator
You're right, the 258 amc engine has an amc pattern 727 mated to it which is not interchangeable with the IH pattern 727. You could try removing the pan to drain the fluid, adjust the bands following the excellent step by step procedure outlined by Mike mayben in this forum, replace the filter, fill with new fluid and see what you get...but it would likely be a waste of time and money. A trans out of service that long really needs to be overhauled.
Michael Mayben
IHPA Tech Moderator - Retired & No Longer Online
There is no "flush" process for an automatic that will do anything other than flush cash out of your treasure chest. And "flush" and "transmission repair inna can" are the same class product...bunk! The so-called "flush" that the quick service folks do usually end up in a tranny that is totally scruud, that is a total scam foisted by the quick service industry. Flushing does nothing except flush garbage into the orifices, passages, and valve body where it's lodged and then requires a complete overhaul of the valve body to repair it.
Drop the pan. Replace the filter, adjust the bands, I bet if it does not fix it, it will be improved. The entire process has been posted in detail in a sticky in this sub-forum.
The amc bell pattern is specific to the amc engine line. The internals of the 727 transmission are essentially the same, though each variation for the amc version is set up for a particular engine combo.
Try the maintenance procedure, if it doesn't improve the situation, then pop the tranny out and have it rebuilt in "bench mode", you will save considerable labor charges in doing the r&r yourself.
Drop the pan. Replace the filter, adjust the bands, I bet if it does not fix it, it will be improved. The entire process has been posted in detail in a sticky in this sub-forum.
The amc bell pattern is specific to the amc engine line. The internals of the 727 transmission are essentially the same, though each variation for the amc version is set up for a particular engine combo.
Try the maintenance procedure, if it doesn't improve the situation, then pop the tranny out and have it rebuilt in "bench mode", you will save considerable labor charges in doing the r&r yourself.