Well I read the whole Arp website, and the .625 knurl is listed for Ford/Chrysler only.:crazy:Hi guys.
The title pretty much says it all. I have ARP 1/2" studs for my front hubs, they come with a .625 knurl but I cant find any info saying what size hole I need to drill for them to fit.
Thanks in advance
Yep,I gotta ask. How are you guys maintaining the proper hole center's when doing this crap?
The front hubs are cast iron and cut like butter. The flanges for the rear spindles are steel but machine easily. As far as the drill size, I think you might need a 39/64 and an adjustable reamer. A drill and reamer this size is expensive and has a taper shank. This is time for the machine shop. If you could find a drill this size, I sure wouldn't do it by hand.I'm having an issue finding a drill the right size to drill these holes....cant seem to find a .620 or .618 drill (has to be hardened because the flanges are hardened(.
Anyone have any ideas?