Just trying to figure out the best route to go I have a B body 8 3/4 I am putting in my 73 Duster, and want to know what backspaceing I should use. I want to switch to 15 X 8 ralley rim.
Good post, I just did this 2 days ago, haven't installed wheels yet, still waiting on parts to arrive and to set up the diff. I put in a 66 B body that is supposed to be the narrower of the B body rears. :blob:
Well its stock spring location and and I did move the perches in to stock width. I guess what I would really like to know is I want to run the ralley wheels but they don't come in more than 41/2 backspaceing so I looked into having my 14's changed to 15 X 8 and price wise it is 130 a rim and they can move the backspaceing but I did find some 15 X 8 for 200 a pair but still only 4.5 it's just I have heard it both ways to move out and not to move out.
5/16" per inch on each side. So figure a ~5.75 BS to get the wheel centered.
Well its stock spring location and and I did move the perches in to stock width. I guess what I would really like to know is I want to run the ralley wheels but they don't come in more than 41/2 backspaceing so I looked into having my 14's changed to 15 X 8 and price wise it is 130 a rim and they can move the backspaceing but I did find some 15 X 8 for 200 a pair but still only 4.5 it's just I have heard it both ways to move out and not to move out.
I realize I’m digging up an oldie here... but I’m about to do the same.
73 Duster.
My B body rear measures 55” or so.... end of housing. Not the axle Flange but the housing.
My perches are 44” give or take an 1/8”. I wonder if stock 7” police wheels will fit inside the stock houses with this setup.
Forgot I even replied to this. Looks like with the 68-70 B body axle, I need 8” wheels, 5.75” backspace to run a 255 or so tire on it with stock spring location? I’m cutting and welding on new perches soon. Thanks.
I’d think with the 255 I’d have some safe zone on both sides too.