Alright I know there are a few tranny gurus on here and I need your help. I have in my possession an OBD2 tranny but I have no idea if its an LS or GSR. I also have another B-series tranny that I know for sure that it is a GSR tranny and have opened up a while back.

The two trannies look almost exactly the same. The same number of teeth on the differentials and it appears that they have almost the same gears etc. I've gone through the helms and the only difference that I did notice was that in the GSR tranny that I know for a fact has a gold colored washer on the reverse ideal (as specified in the Helms book for a 94 gsr the same year the tranny came from), and the unknown tranny doesnt have the gold colored washer. My question is that did the OBD2 GSR tranny's come with the gold colored washer or did they not? Everything else appears to be the same... same shims with race shims etc... Any help would be great.

*EDIT* link to pics http://pg.photos.yahoo.com/ph/b16dra...krmhEBm1XWQDYO

 

ls has less teeth on the ring gear, so if its the same as your old gsr tranny, it is a gsr

That shim is only on 94-95 tranny's I think, not 100% sure tho.

 

Thats what I was trying to figure out... Any one else?

 

count the teeth, then do the math.

Really simple

 

Good deal! THanks alot buddy. Just got back from Vegas... People barely started trickling in for Spring Break. Too bad I am not there right now! haha j/k!