Updating early 904 - is this a suitable donor?

mtna_buzz said
Was lucky with no vibrations - the converter hub still looks like new.

I wondered about the 999 - but don't really know what the difference is - or when they phased them in. Not sure how I'd identify the lower 1st gear.

Got the one from the yard further apart and it all looks ok - except for the burnt clutches. It has 4-gear planetaries where the '66 had 3-gear. I think I'm just going to go through this one and call it good.

I don't think it's a lockup - have the converter with it and don't see anything out of the ordinary. I read that the 727's with lockup had the end of the input shaft machined smaller - don't know if the 904's had the same -but this one is splined right to the end.

Thanks for the replies - time to start cleaning parts!

Sounds like you got lucky and got a non lock-up model as the input shaft splines are the way to tell. To tell the std. gear set from the low gear set look at the sun gear. If it is the same diameter on both ends it's a std. gear set. If it's smaller on one end it's the wide ratio set. I attached a picture of the exploded view of the gear train that shows the wide ratio sun gear. You can see how it's smaller on one end. I don't have a picture of the std. gear set handy but I can probably dig something up if you need it.