Can anyone tell me what 4.75 lug pattern front rotor will work on a 1961 Buick Electra. have some wheels that would like to use.
I think you will have to use some sort of adapter. As far as I know, all GM full-sized cars used 5 X 5" bolt patterns. A '61 would have had the big Aluminum drum brakes. You would have to find spindles designed for disc brakes. I don't know whether later big car spindles can be made to fit or not. I'm sure that this has been done before, but if your intent is to convert to disc brakes, it could turn into a bit of a job. You also should remember that GM used the 5 X 5" bolt pattern for a reason.
55 - 70 Chev full size used 5 x 4 3/4. As did non fleet/non police 77 - 90 B cars.. Maybe a 58 - 64 Chev full size spindle w/ aftermarket rotor adapted to it could work?