Well, long story but I may have lost my transmission man. I’ve been told that he might, but he won’t supply the parts. So where is the best place to find good parts. I have plenty of cores available. Where is a good place to buy converters. It has been awhile since I even bought one of those. Finally, I’ve been told that it is really pretty easy to rebuild these. I’ve got a service manual and another book on how to rebuild one so is there any others I should look at buy? Any help is appreciated.

I've lost a couple of great local resources for parts and just order the basic kit online anymore. The Transtar kits are what I prefer for a basic rebuild. If it's peformance related I do Alto Eagle Reds and Kolene steels. I believe the last ones I got were from Mancini.

I buy all my transmission parts from A&A Transmission in Camby, Indiana. Rick Allison is one of the best in the business and has manufactured many parts and upgrades for these. He will also generously share his knowledge and can put together a good rebuild kit for you. I like Turbo Action for torque converters. Paul Forte the owner there was working with Chrysler from the early days developing better converters for their race teams. No reason to go anywhere else.

the FSM, the monroe book, and a book from the ATSG [automatic transmission service group] should be enough to get you through your rebuild without any undue stress[es] and have it work properly when done.

I love my Turbo Action and it works well. Just don't try and have them do anything (put a new snout on) after the fact! I would have had more $$ in it than a new convertor!

I rebuilt a 727 once. But the car never moved again under it's own power.

Transtar sells the good clutches and steels also. But you cant get the really special stuff from them steel planets aluminum drums etc.

We have a Transtar Transmission warehouse close to where I live in Denver, so it's pretty good for standard rebuild kits and converters.
The standard tan clutches in the 727 kit worked fine in my 12 second Charger, But I had a Hughes converter.
My 360 powered truck has a converter from Transtar, but it is not listed in the catalog. It is a factory highstall converter but had upgraded internals. I think the upgrades are maybe $100-$150 on top of the price of the standard rebuilt converter, which was only like $100 to start with.
They have 6 locations in Texas.
https://www.transtar1.com/

For performance parts, I have bought a few kits off E-bay, but the part types and prices are all over the place so you sort of have to know what your looking for.

I have got parts from some of the other on-line transmission warehouses too,

If you need several different parts, check the shipping costs. It might be less expensive to get all the parts from one source even if the individual costs are slightly higher?

I have an old VHS video on rebuilding 727s that I got from JC Whitney. I know, I know; JC Whitney?

But the truth is, I have rebuilt 8 or 10 727s with it. It is great. He shows you most all of the steps using mostly home tools. One example; he shows how to check end play with Vice Grips and a feeler guage. He compares the wear items new and used side by side and what to look for. Way better than just a book.

For reference; the video is from Technical Video's Automatic Transmission Rebuild Series #1205 Chrysler 727 by Paul Zank.

https://moparforums.com/forums/f7/technical-question-about-727-torqueflite-transmission-1017/

Maybe someone has a copy they can lend you or maybe even make a copy. It really does take so much of the guess work out of the process.

P.S. I just looked and it appears that Wal-Mart offers a VHS to disc service. Looks like $20 or so. Maybe others do too.

IMO, the FSM for your year trans is the best source for service info...there are enough slight changes from year-to-year that the generic books often don't have the correct info.

I picked up a dvd from Technical video (www.technicalvideos.com). The part number is 12-727. I think it cost me $30. It's pretty thorough and has helped a lot.Of course I have the Monroe book as well but the dvd has been the biggest help for me.

very true. if the OP has no, or limited knowledge of the transmission, the correct year FSM is definitely needed.

I’m pretty good at everything I try to take on. I have been building motors, 4 speeds, restoring six packs, etc. I try to garner all the information I can get to get started. My transmission man has told me a lot through the years. If he’d just do the job, I’d let him. I can do it. Just rather let him. In my casual conversation with a Mopar friend, he stated he thought they were easier to build than a 4 speed.

They are pretty easy to do a mild rebuild on. I still lay out everything the way it comes out so I don't miss putting something back in.

I thoroughly clean everything and lay it out on paper towels before assembly. Cleanliness is key!

I have probably had at least a dozen converters redone by Turbo action over the years, some 727s and a lot of 904s. Most everything, stall changes, snout changes, ring gear replacements and so on.

I think the only problem I had perhaps was a sprag letting go inside a converter. It had only a few runs on it but had been sitting on the shelf long enough to be out of warranty. They still fixed it without charge.

727 transmission are pretty easy to rebuild once you gain a little bit of experience and buy a handful of tools. The first one I did took me a week since I slowly studied each part as it came out and figured out how to put it back in. By the time I rebuilt my third one I could do it in a day. Race transmissions which are typically nice and clean both inside and out can be rebuilt in a couple of hours if you have the parts on hand and know what you are doing.

One thing you have to really watch out for is the part changes over time. You can get really screwed up if you mix and match parts from different years. You have to either stick with one transmission at a time, or else you have to pay a lot of attention to the various splines, seal positions, oiling passages, etc. If you accidently mix up the parts the trans either won't work or will eat itself.

Right now I have two 70 six packs transmission to do and one from a 71 340. The 71 requires a different kit I think the pump or something is different.

Getting good snap ring removal and spreader pliers, make or buy a few tools for clutch disassembly and follow the service manual as mentioned. Measure input shaft clearance before you start disassembly and do each sub assembly separately. Don't throw any seals or rings away until you match with kit and reassembled the sub assembly. They really are not hard once you have a few under your belt. If the trans was good before overhaul, you should have no issues. There are some rings and spacers that have different clearances, and it would be nice to have a selection to check during reassembly to get your clearance where you want them. Maybe your old transmission guy would give you access to those parts and a few pointers as you do the work, for a lunch or beer.