GM remanufactured 200-4R, Art Carr shift kit

[NickSJ]

When I bought my T-Type a few months back, the trans had a nasty 2-3 slip, so with the car came a new (reman) 200-4R. This was a GM rebuild, never run, with AC delco stickers and stuff on it. Also was given an Art Carr shift kit. Last weekend I finally put it up on the bench and pulled the pan to start putting the shift kit in.

As I went through the shift kit instructions, I found that basically ALL of the stuff in the shift kit had already been done - the plate between the valve body already drilled, springs and check balls missing where indicated. Only real difference was that the hole in the accumulator was completely plugged, whereas the shift kit indicates to drill larger to accomodate a cup plug with 1/32" hole in it. My accumulator is drilled, threaded, and plugged.

So I figured that maybe these mods were part of an updated build/rebuild process at GM.

BTW, in addition to the AC Delco sticker the trans also had some letters marked real big on the top of the case, but I can't remember what they are.

Anyone else know anything about this, like basic 200-4R perf. mods being adopted into the standard GM trans build process?

Thanks,
Nick G, San Jose CA / 86 T-Type, TE-44, MSD-50s, LS1 MAF/Trans, Nitto DRs

[LV GN]

i cant see it happening. gm rebuilder's never use valve body kits but do have some tcc pwm upgrades. on the later model stuff. maybe they just rebuilt a trans with shift package already in it. all the gm turbo regal rebuilt trans i have ever seen have a new xplate( sperator plate ) in them and never a shift kit. :eclipsee:

[CHRIS718]

sometimes gm uses an "authorized gm rebuilder" that they give stickers to etc,i know one local who is part of the program and if gm knew how he was rebuilding these srta units hed be out of business.lets hope this is not what is going on in your case. :joint:

[1badTTA]

sometimes gm uses an "authorized gm rebuilder" that they give stickers to etc,i know one local who is part of the program and if gm knew how he was rebuilding these srta units hed be out of business.lets hope this is not what is going on in your case. :joint:
Are you saying that in a good or bad way?? We all know that the way GM does some things can easily be improved upon.

[CHRIS718]

i meant it in a bad way. :deal:

[NickSJ]

Thanks for the information. I will find out soon enough, will be installing the trans in a couple weeks. Hope it all works out...