narrowed 8.75 rear end

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You might want to be a bit more clear. When you say "spring relocation kit" do you mean the one that moves the springs in 3/4 of an inch on each side, or the one that moves the springs under the frame rails (4 inches?)
 
I’m assuming the car is tubbed as well? Will also depend on actual vehicle, desired rim width, backspace and brake package. Assuming your car is tubbed and your going to use something like 15 x 10” rims you’ll probably need a wheel with around a 3.5” backspace. I’ve done a lot of guessing there but I’m basing it on my 69 Dart (Valiant Hardtop) running 15x10’s with 5.5” backspace and Dr Diff rear disc brake package requiring a 53” housing. With my car I bought the wheels first and we dummied it up by centering the wheels in the tubs before measuring up and narrowing the axle housing to suit.

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Cal Tonsley said:
I’m assuming the car is tubbed as well? Will also depend on actual vehicle, desired rim width, backspace and brake package. Assuming your car is tubbed and your going to use something like 15 x 10” rims you’ll probably need a wheel with around a 3.5” backspace. I’ve done a lot of guessing there but I’m basing it on my 69 Dart (Valiant Hardtop) running 15x10’s with 5.5” backspace and Dr Diff rear disc brake package requiring a 53” housing. With my car I bought the wheels first and we dummied it up by cantering the wheels in the tubs before measuring up and narrowing the axle housing to suit.

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It is a 72 dart and that is the same set up I was looking at. The 53" is that measured from the axle flange to axle flange?
 
Will the housing I have work or has it been narrowed to much{it was already narrowed when I got}? Is there anyway to make it work for this setup or will I have to get another housing?
 
Mine is 49.25 inches. I have the dr diff offset and this is the tight area .
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Yes it will work. Depending on the backspacing of ur rims u may have to mini tub. U didn’t say how wide or the b/s of ur rims r. My Dana is 48 inches wide. Perches r 37 inches ctc. Mini tubbed. Rims r 15x10. 4 7/8 back space. Kim
 
oldkimmer said:
Yes it will work. Depending on the backspacing of ur rims u may have to mini tub. U didn’t say how wide or the b/s of ur rims r. My Dana is 48 inches wide. Perches r 37 inches ctc. Mini tubbed. Rims r 15x10. 4 7/8 back space. Kim
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Thank you. I'm going to mini tub and try to run 15x10s.
 
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