Backspacing
 

Does anyone know the backspacing on a 1963 Dodge Polara - stock eliminator car for a 10 inch wheel. I have an 8 in wheel now. The car has cal-tracs. Any help would be appreciated.

Re: Backspacing
 

I have 5 in on my 64 Plymouth

Re: Backspacing
 

If your current 8" wheel puts the tire where you want it, add 1" to its backspacing.

Re: Backspacing
 

One other thing, the section width of the tire will probably increase a little, about .3" in and .3" out at the sidewalls, with the wider wheel.

Re: Backspacing
 

You might have to bend the inner lip of the wheel opening too.

Re: Backspacing
 

Thanks for all the info - really appreciate it.

Re: Backspacing
 

we sold the force 5 bogarts to Dave Young for his 63 and Gene Mosbeck for his 64 and I'M pretty sure John Dinkle as well they were all 15X 10 and had a 5 inch BS.

Re: Backspacing
 

I had 10 inch with 4 1/2 BS 64 Ply. With 65 rear end with no Key axles.
Wider/ Later Rear End will require more BS. What year rear end are you
using and what width and I can tell you more exactly?

Most everybody who ran these cars replaced the weak and difficult to remove
Keyed axles with a later model rear. Many years had the same spring perch
width ( about 44 inches ) but differing widths of housings affecting the back spacing
choice.

You should have some leeway because we used to run 10.5 width in SS without any
mods except wheel lip.

Re: Backspacing
 

I bought the car out of Mass. and I don't really know what year rear is in the car, but I do have an 8" rim on the car now w/4 1/2' bs on the car now.