Backspacing issues

[SP20096]

I have a 70 Chevelle and right now the body is not on the chassis and I need to find out the proper backspacing for the rear? I plan on running a 275-60-15 on a 8 inch torque thrust II, or a 275- -18 on a 8 inch torque thrust II. And also does the backspacing have to be the same on the front. I want the deepest look possible on the back. The rear end is stock width.

[MrQuick]

Well the rears will be different from 15's to 18's abit due to side wall flex...I know im gonna get reamed later but a 5.5" back space should be cool on both. The fronts can be different, say 4.5" or 5"

[USAZR1]

I have a 70 Chevelle and right now the body is not on the chassis and I need to find out the proper backspacing for the rear? I plan on running a 275-60-15 on a 8 inch torque thrust II, or a 275- -18 on a 8 inch torque thrust II. And also does the backspacing have to be the same on the front. I want the deepest look possible on the back. The rear end is stock width.

To keep the deep look and have enough room for a 275 tire,you will need a zero offset or 4.5" backspacing on a 8" rim. You really don't need 5.5" backspacing unless you run a 9.5" or 10" rim.

[andrewb70]

I run an 18x10.5 with 6 inches of backspacing on my GTO with a 295/45/18.

Andrew