Shimano pre-index mech in an index setup

I have a 600 Arabesque rear derailleur that I’d like to use in an 8 speed indexed setup. Is the shift ratio the same as indexed derailleurs?

Can anyone save me the trouble of trying it out?

Thanks, Scott

Should be fine ATMO, but I’m not 100% sure. Suck it and see eh.

No. That’s why it’s pre SIS. Not constant leverage.

Well there you go.

Thanks chaps, just what I needed