904 fluid capacity?

I just installed a 904 in a 66 valiant last weekend. I always go by feel. I poured one quart in the TC and 4 in the pan, then started it up and poured as much as it would take to fill, which ended up being 7 quarts.

Theres lots of good info here and I agree with the stock specs provided most recently. Theres no way, in my experience, that a stock set up takes more than 7-8 quarts.

I say start with 6 or 7 with your set up and go from there, following some advice here about warm up and running through the gears to get it circulating.

I have used ATF+3 and 4 for a long time before realizing that mopars of that age called for dexron 3 and have had zero issues. These are pretty simple transmissions and will run on any atf I bet, but to stay safe, choose dexron 3 of any brand.

Ford type f has been used for firmer shifts, but remember, this is an old fluid and has much less lubricating properties than dexron, thus causing the firmer shifts and the subsequent need to change more often.

ATF+4 and earlier are formulated for newer vehicles with lock up clutches and whatnot, so it contains more additives unnecessary in our older transmissions.

Hope this helps if nothing more than supports whats been said. Drive on.