I'm going to rebuild the 727 in my Newport myself. Does anybody have any suggestions on upgrades? I don't know if it is a lockup or not until I get it apart.
727 Rebuild Suggestions....
- Thread starter 1978 NYB
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My fender tag says the car was built May 17th, 1978. It's a late production car so I'm assuming it has a lockup converter.
flyinbrick68
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That's a great topic to start... I'm.going to be going through mine as well! im planning on using alto reds for the cluthes use a no flip rear servo. use and aftermarked plate to increase the forward clutch capacity. replacing all the bushings ect. block the accumulator and usea 4.2 kickdown lever w a better strut. prob a bolt in sprag and maybe a tf-2 shift kit. Just my plans... im not an expert.by any means.
There's a book on the 727 that's pretty good. Money well spent.
http://www.amazon.com/Torqueflite-A-727-Transmission-Handbook-HP1399/dp/1557883998
http://www.amazon.com/Torqueflite-A-727-Transmission-Handbook-HP1399/dp/1557883998
bajajoaquin
Senior Member
Lockup? I learn something new every day. I thought the only lock-ups were 904s and 518s. Are lockup converters retro-fittable to earlier transmissions?
Whatever you decide, make sure to show us lots of pictures. I'm a little ways away from rebuilding my trans, but I'm leaning towards doing it myself, too.
Whatever you decide, make sure to show us lots of pictures. I'm a little ways away from rebuilding my trans, but I'm leaning towards doing it myself, too.
67Monaco
Old Man with a Hat
Different input shafts but is do-able with the right parts.
70bigblockdodge
Old Man with a Hat
I am rebuilding the 727 for my Barracuda right now I can try to post some pics. I did my brother in-laws trans for a 71 340 cuda it works well, I think it should shift harder but he didn't want it set on the highest level of the b&m shift kit, I like them to go BANG!! All I used in his since the car is stock is a ATP kit I bought off rock auto and a kevlar flex band from mancini, although I'm not using one of those in my transmission I got a band from my local trans guy that he uses in his diesel builds, Reybestos pn rps38961it seems sturdy time will tell. I think the 4.2 lever is a good choice the strut upgrade is a no brainer also the overrunning clutch/bolt in sprag is a good insurance upgrade for the $, I would use a trans go shift kit
70bigblockdodge
Old Man with a Hat
I think you would be better off trying to find a BB lock up trans and putting it in, I got a cool pdf file I downloaded to my phone from www.mymopar.com tells you what the trans came from using the numbers on left side of pan rail. I know that if you can see the input shaft there is a snout sticking out in front of input splines, I would guess that if you found a small block 727 lock up you can tranfer inne
70bigblockdodge
Old Man with a Hat
And expensive.
AAP has torque converters for less than $100
70bigblockdodge
Old Man with a Hat
That's a good price the demand is probably way down on those by now I guess
I believe 1978 was the only year Chrysler offered a big block lock up torque converter.
67Monaco
Old Man with a Hat
I thought that was implied by the input shaft being different.
78 and up can have either type of input shaft, thus convertor. According to the bible.
moper
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The lockup vs std 727s differe a bit inside, and I think the case is different too because of the switch and fluid path. Not sure, but I think so.
In terms of advice - Get that rebuilding book, look up Bulkpart.com, buy the rebuiild kit, the bushings, a TF1 transmission shift kit, and rebuild it. That will handle pretty much anything you throw at it until you start topping 450-500hp. Then it might need a different shift kit. The basic 727 is unbelievably strong.
In terms of advice - Get that rebuilding book, look up Bulkpart.com, buy the rebuiild kit, the bushings, a TF1 transmission shift kit, and rebuild it. That will handle pretty much anything you throw at it until you start topping 450-500hp. Then it might need a different shift kit. The basic 727 is unbelievably strong.
You're right......but my Newport was a late build (May 5th) and probably has a lockup. Won't know until I take a look or cipher the code on the case. Everything Mopar 1979 and later had lock-ups.
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