Liquid_02

That's BS, you don't need 3" studs per NHRA rules, you can run an ordinary closed lug-nut if you feel like it. NHRA rule book (which I have read many times during my build) states the stud must protrude the hex portion of the nut a distance that is at least equal to the diameter of the stud. So for a 7/16" stud which your car has, the stud only needs to enter the hex portion of the stud 7/16" of an inch. Open nuts are to just make tech faster, they don't have to be open. I bought a set of ARP's, then cut them to fit under my closed lugs. Have never had a problem, they just make me take off a nut every time.

AdderMk2

and on our FAST cars that run weld racing wheels... you need a 3" stud to get 7/16" of stud out past the hex.


dont **** with me

Tony71502

How can you run closed lug if it has to protrude that much? Do the threads in a closed lug end before the cap?

Liquid_02

Yes, the threads end before the cap, but 7/16" isn't very much, the stud doesn't even have to go to the end of the threads anyway, the hex portion on my nuts is an inch deep.

Fast cars? You'd never even stand a chance of keeping up with mine with your 347 and 5 speed. I have a 408 w/ an auto, got rid of the 5-speed junk, if you did any true racing you would know 5-speeds are no good for it, ET is far too in-consistant, how many drag cars have a standard in them? Look next time. My car used to be a 5-speed car, but when I did the motor swap, got rid of that.