Torque converter weight conundrum!
As I understand it some years had a drain plug and some years didn't. And I was wondering this exact same thing myself. That's why I was asking the question has anybody seen a weight set up that wasn't near the drain plug and has a drain plug in a different area and the weights in a different area? I just haven't?
I cant help with where the weights go, but here is some information that might help.
Narrow ring gear up to 1976> Two weights: 1.62" x .75" x .380"
Wide ring gear up to 1976> Two weights: 1.62' x .75" x .380"
Wide ring gear 1977 - up> Single large triangle weight as shown in the photo above. Weight of 120 Grams
Above are for NON-LOCKUP converters.
Weights from what information I have, the 904 - 727 use the same weights. There is no difference.
Above information is for the 360 engine. 225 - 318 engine> No weights either on a 904 or 727 converter.
If the weights are not placed properly converter could/will be out of balance. In our converter shop we had 2 converter balancing machines so our guy knew exactly were the weights needed to be placed if for some reason the factory weight was there or you wanted to make a 225-318 converter work with a 360.
Hope this helps.
Little more information I just found.
383 and 400 from 67 to 77 (steel crank) also no weights, narrow ring gear.
