Guest RiVRAT 63 Posted January 23, 2013 Share Posted January 23, 2013 Hey guys this may possibly be a stupid question. iv been tring to figure out what my bolt patteren is for my 63 Riv and have found nothing on the interwebs... (some help) either way do any of you guys no what it might possibly be? for the longest time i throught it may have been 5 on5.5 but when i started to look i got 5 on 4.75 ect and other dimentions.Thanks againDante. Link to comment Share on other sites More sharing options...
RivNut Posted January 23, 2013 Share Posted January 23, 2013 Dante,The bolt pattern on your Riviera, and all of the bigger GM platforms for that era, is 5 on 5". FYI - your '63 has left hand threads on the lug nuts on the left side of the car and right hand threads on the lug nuts on the right side of the car. Make sure some kid with an impact wrench doesn't strip out or over tighten the left side of the car thinking he's taking them off. That's why there's a large L stamped into the end of the stud. Also, the '63 and '64 Rivieras have a larger hub than the later years, '65 and up. That means in order to get a wheel to fit, it has to have a larger center hole in it.Ed Link to comment Share on other sites More sharing options...
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