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727 troubles

Bradyc32

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Joined
Mar 23, 2025
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Location
NC
Hi all. Getting ready to start working on my '76 with a 400ci v8 and a727. Transmission is toast and wanting some advice on whether I should buy a reman transmission or get the one that's currently in the truck rebuilt. Also, does anyone know what the difference is between these two options? Specifically, the "Ext House Len" option. Picture is from jasper engines website.

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If you've got the tools & know-how, rebuild it yourself, like volaredon said. You would save a TON of money too, rather than on someone else doing it, shipping & all that. Just by the looks of the advertisement, I'd think one is for a 4WD & one is 2WD. Different tail housings. If you're going the re-man route, have YOURS done. Make sure you get a new convertor & flush your trans cooling lines & radiator cooler. Adding an additional external trans. cooler is a very good idea too.
 
Thanks for y'all's advice, I will consider rebuilding it myself. Is there a certain type of rebuild kit I should be looking at?
 
Rebuild kits don't come with bands or steel clutch disk. Other than that everything should be in a kit. Get a good set of snap ring pliers. The rest can be improvise.
 
A 3sp is a lot easier than the modern 4,5,6,8 and10 speed trans. Get a book about the 727 or watch YouTube videos
 
Rebuild kits don't come with bands or steel clutch disk. Other than that everything should be in a kit. Get a good set of snap ring pliers. The rest can be improvise.
I did some looking and it says this deluxe kit from rock auto has bands and a steel clutch plate. Will that work?
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