I would say depends a lot on if you are running tubes or not I would not run tubes without them being screwed if you do and the tire slips it will rip the valve stem out of the tube.

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4