Advantage to move springs in?

[mayhem]

I have a D60 from a B-body I want to use under my Challenger using offset spring mounting brackets. I have been told this will gain 1" per side. Or, would it be reasonable to move the springs/perches inboard to the frame rails - with obligatory mini-tubs of course. I'd like to fit 325s in the rear wheel pockets. Has anyone here done this? Any other mods I would need to make?

 

[Chryco Psycho]

The dana needs to be the correct year B body as dimentions change in different years .
315 should fit ok on 15" wheels & if you are using 17" 325 will fit as there is less sidewall bulge .
Splitting the wheel tub & moving it over is another possibility but you will need to notch into the frame rail for the front mount .

 

[heminut]

Some of the classic car insurance companies may deny you insurance. I know that Hagerty specifically asked if I had wheel tubs and I had to provide pictures of the trunk area to prove that I didn't when I got insurance from them. They specifically told me they would not insure a car with tubs or mini tubs.

 

[Chryco Psycho]

Mini tubs can be concealed very well if the work is done well as it will use the factory inner stampings

 

[mayhem]

Good to know CP. Rear end is a 1966 B-body D60 from Currie; flange to flange is 54.346" per the spec sheet that came with the rear end. I plan to use 15x10" rims with a 5" offset using the offset front mount/rear shackle kit. If this isn't possible, I'm ok with moving the springs & tubbing it. Car goes up on jackstands Thurs & we'll start measuring things. I hear what you're saying 'Nut; we'll see how things go with the build but wiill keep the possible insurance issue in the back of my mind. Glad there are such knowledgeable folks here to keep me on the straight and narrow. Thanks to both of you.

 

[mayhem]

Did a little browsing in the wheel & tire section here and found a link to another site (E-Body Tire Sizes (what fits, what's too big, what looks good) in Wheels, Tires, Brakes, Suspension & Steering) discussing combos & what will fit using the B-body rear end & spring relocation kit vs minitubing, etc. Very insightful. I may rethink my plan a wee bit. Stay tuned.

 

[Cudapile]

Good to know CP. Rear end is a 1966 B-body D60 from Currie; flange to flange is 54.346" per the spec sheet that came with the rear end. I plan to use 15x10" rims with a 5" offset using the offset front mount/rear shackle kit. If this isn't possible, I'm ok with moving the springs & tubbing it. Car goes up on jackstands Thurs & we'll start measuring things. I hear what you're saying 'Nut; we'll see how things go with the build but wiill keep the possible insurance issue in the back of my mind. Glad there are such knowledgeable folks here to keep me on the straight and narrow. Thanks to both of you.

Where are you buying the offset shackle kit.

 

[Chryco Psycho]

I suggest Doctor Diff / Cass for offset hangers & shackles

 

[mayhem]

Any parts & pieces needed will come from Cass (Dr Diff) for sure. I don't think I've ever read a bad review about his service. Very helpful guy from what I understand.

 

[Cratos]

I put an A-body 8-3/4 and one inch offset spring hangers on mine and 295-50-15's on 15 x 10 keystones fit right on with room to spare.

 

[mayhem]

Very nice Cratos. Stock springs or Espos +1? What offset on the rims?

 

[Cratos]

Thank you
15 x 10 keystones Klassics. and superstock springs ( I like the old school rake look) with 1 inch off set hanger kit