1970 front positrac

[jp9124]

well, good news/bad news at least it's not no news. As far as I can tell, the current wheels are 3 and 3/4 in backspacing. the modern wheels I want are 4.5 in backspacing. With my unscientific measuring, I do not have an extra 3/4 in before I am hitting the tie rods, maybe 1/2 in.

Do any of you know the maximum backspacing I can use? I guess maybe I should have thought of this sooner......

[SS Tim]

These later GM wheels would look good on your truck. Pretty sure someone over on the squarebody board could hook you up with a set and caps. But there is a retail choice as well.

http://www.wheelsandcaps.com/w_selec...el=&type=&id=1

[special-K]

Originally Posted by jp9124

Do any of you know the maximum backspacing I can use? I guess maybe I should have thought of this sooner......

I wish I could give you a cast in stone limit on backspacing. I know hewer vehicles started using more. Back in the day we never gave backpacing a thought. It never came up because just about every creation out there took the same amount. I can say that 4" is the nominal figure. But,That doesn't help. I'd say it's hard to believe things are that close tolerance. Consider one thing,though...Are these wheels you're considering 15" or are they a larger diameter? That may be the difference in clearance.

[jp9124]

Originally Posted by special-K

Consider one thing,though...Are these wheels you're considering 15" or are they a larger diameter? That may be the difference in clearance.

They are 16", I decided to pull the trigger today and order them. Hoping they clear with the larger wheel, it may be tight but if they do not clear the tie rods, I will probably find some type of spacer.

[67swb72klb]

very nice (rare w/the front posi) truck i like the 15x8 steel with d/d stainless caps or some rallys or some slots myself
but its yours so do what you want