I'll let you know when I get there, lol. More than 3/4" on my car. I'e got low flat top fenders which make it harder.
Depends on what type of rear suspension. With a panhard bar to locate the rear you can get by with less clearance. I've got about .5" and never rub with my panhard bar.
I was rolling into the car show sunday as you pulled out, & damn is that car nice and sounds freakn nasty. Bummer i didnt get a closer look. I was out parts chasing and stumbled onto the event. Will you have it at the round up this weekend?
I build most cars to 1" A panhard bar still move the axle slightly one way or the other (depending on length and amount of travel) but the real issue is during articulation, when one wheel is moving more than the other - like turning in to a driveway with some angle
It depends on the tire and the suspension. If you've got really positive lateral location some late-models will go down to considerably under 1/2in static. A Panhard typically results in < 1/8in side-to-side displacement. Soft leafsprings on a stick axle, lots.