I am still looking for a good replacement part but was also wondering if anyone had any input on the benefit of using a billet one? Several trans outfits carry them.

you may go faster because of your lighter wallet?

I think most of the builders are selling them because its an easy part to make and the OEM pistons like other powerglide parts Im sure are getting harder to come by.

Stock one will be just fine as long as the piston is in good shape, not damaged, warped etc. I had a stock one that was.030 thicker on one side than the other and had pits all over it and it was in a trans that came from a name brand builder. Main thing is getting your friction clearance correct without stacking a bunch of steels in it. just my 2 cents.

Strength is far superior going 6061 T6 billet. While your in there, do the front also. Your wallet will thank you.Xmas gift for your lonely PG.

Chasracer you can not find a rev. piston for a powerglide do you know how thick the piston needs to be let me know I can get one for you.

In my experience and opinion, the factory pistons are completely acceptable. Consider the number of powerglides in service with an OE piston.

This company can furnish any thickness required.

https://www.tsr-racing.com/

Also, it is completely acceptable to run the friction against the sun gear plate. Many are built that way.

quote:

Originally posted by sittin duck:
Chasracer you can not find a rev. piston for a powerglide do you know how thick the piston needs to be let me know I can get one for you.

PM sent

All of the footbrake PG's I've put together, 6 standard frictions and steels, pistons were right around .800" thickness to get it all in and still have an acceptable clearance. As I remember, some of the originals were right at .800" and I had a few of those laying around that saved me from cutting them.