Originally Posted by
himespau
Hmmm, a bit further googling and I may have answered my own question.
This website says:
Shimano LX 74/100 BCD FC-M560 1993-94 113mm x 68mm - English 118mm x 73mm- English
I have a used 115x68 cartridge bb laying around as well as a 117.5 spindle and a couple of sets of cup and cones. I think I'll give the 115 a try as I doubt 2 mm will make that much difference in a 3x8 speed derailleured bike, right?
First I assume the BCD's are 74/110 and the 100 was just a typo.
I had the same crank on a '93 Trek 7000 MTB (3x7) and had to use a 127.5 mm Shimano square taper cartridge bottom bracket to get the
non-drive side crank arm to clear it's chainstay. Despite the way too long drive side spindle, it shifted fine so I expect your chainline problems will be minor.