Some minutes ago I was trying to tune my carburetor (idle very fast and not resolved yet) but in the test drive I shifted into reverse and missed to release the parking brake , I accelerated and then the transmission did a horrible noise (the reverse slipped) something like when somebody shifts wrong a manual transmission, immediately I shift to neutral and the noise disappeared but I shifted again into reverse, the sound did not appear immediately but when I was starting to move the horrible noise came again (the reverse slipped again) but inmediatly the horrible noise disappeared and I continued reversing. I made another test drive and the noise don't appeared and none of the gears slipped, I reversed about 5 times even in a hill and no problems but I notice a constant noise like if something were scratching a piece of metal and this sound changes when I shif to reverse or drive position but don't disappear.

I think the follow comment is important: before having the problem of fast idle speed If I shifted into reverse the engine was moving a little but now with this problem If I shift into reverse and I've the hood open I can see how the engine goes up a little and then goes down. Yesterday I notice the fluid level on the transmission was a bit low so I bought some Dexron III and add to the transmission fluid, no problem with this the level was between the "add one print" and "full" line but some minutes ago I checked again the fluid level and the fluid looks like if it were lost its color

What the experts think? I think maybe is time to rebuild the transmission but if is necessary to rebuild I think that will be a better option to get an A518 and rebuild it

I've other question: I was looking for some rebuild kits to look for the price but none of this kits include gears of the transmission, even I've searched in summit, jegs and yearone and I can find one of them. If is necessary to replace a gear where can I buy one?

 

i hav found that 727 , 904 trans, and i think the later versions of them. if the internal filter is clogged and the temp is low when put in rev it will be VERY slow to go in to gear. because rev has a much higher line pressure 230-260 psi in a 1967 coronet ,dart, charger. 160-270 psi in a 2001 dak 42 trans. all the other gears are much lower. so it might go in to a forward gear but not rev. i found this EXTERNAL filter.
man o man i about forgot yes its a cut & past sorry. __________________
after you clean the trans. add this to your*chrysler*trans. an external fluid filter
1. go to auto-zone. get 2210, its called a power steering filter, but it is for transs to. it is for 3/8 tubing. by (magna-fine) be sure to use high pressure hose. Reff:http://www.magnafilter.com

 

But I think is time to rebuild due the horrible noice that the tranmission did, If the transmission will shift into a forward gear instead of reverse I think the car will be start to run instead of go in reverse but what about the noise? . About that filter where it must be installed?

Some time ago I heard someone say if someone remove the oil pan from an automatic transmission and found particles that means is time to rebuild, is it?

 

Maybe damaged the rear sprag clutch ? (over running clutch) You need to inspect the trans. You will also need a rebuild kit which you can get on Ebay NONE of the kits come with gears IT IS a different system from a manual trans. Their are usually trans shops that have used hard parts or Ebay..
518 would be nice, IT is not a direct bolt in. Need to modify the trans tunnel, trans mount, larger trans cooler lines,

 

isn't a direct bolt? I was pretty sure that A518 was a direct bolt replacement due to is the same TF727 but with overdrive. What kind of modification must I do? Do I need to do chassis work or body work? Do I need to replace the transmission support or modify driveshaft?

If I do the required modifications to install an A518 and in the future I want to reinstall the torqueflite 727 should I make more modifications?

 

Bolts directly to the engine.. Physically it is bigger on the tail shaft end and longer
Need to shorten the drive shaft and have it balanced, some hammer work on the trans tunnel, modify the trans mount, replace the trans cooler lines with 3/8 lines swapping back to 727, just undo

http://www.transmissioncenter.net/SwapInformation.htm

 

well so in the follow days I'm going to request an inspection to the TF727 to check how big is the damage meanwhile I'm going to search a 46RH. is possible to convert a 46RE to a 46RH? is possible to convert one of this transmission 4x4 to a 4x2?

 

joseph,

I broke my 727 several months ago...

Here's what I recommend... drain the transmission fluid, remove the pan and look inside to see if there are any metal shavings in the pan. If so, post a pic of them so we can see the size. Also, remove the transmission pan filter to clean and inspect.

It's a bit of a time consuming process but it's worth having peace of mind, and not constantly GUESSING on what the problem could be.

As for me, my problem was that I broke the governor, so I had to remove the transmission and have it rebuilt.

 

I'm going to unmount the oil pan to change all the fluid and filter even taking into account that right now the transmission apparently is working well but the scratching noise continues. Apologize me for the following question but How much cost for you to repair your TF727?