Tubs with stock frame rails

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MOPARMAGA

MOPARMAGA

" The other hard member"
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I am going to put tubs in instead of doing the mini-tubs, my very narrow Dana 60 forced me to get creative with the install. For those unaware the stock frame rails are 38 inches, my Dana is 41. So I had to go an additional 7/8 inboard and that was the most I could do to make everything weld in solid and I still had to trim my backing plates and assassin bars bottom plate (where u bolts go through) I put my axles in to get my wheel size figured out. I ended up buying 15×12 weld draglite with 2.5 inch backspace. So with a .5 inch spacer I'll be able to run the tire I'd like (29×12) which would fit in a mini-tub but Incase I need a bigger tire I'd like to have the room already.
Alright so who done it, can you show me some pictures so I can get an idea.
Thank you dudes
 
I don't know about 70's but on my 69 I had to move the rear end back 1/2" to get a 28" tire to fit.
 
justinp61 said:
I don't know about 70's but on my 69 I had to move the rear end back 1/2" to get a 28" tire to fit.
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67-76 hardtops have the same wheel openings.
I'm planning to do my own version of a super stock wheel well opening so I can keep the rear in factory location.
 
It’s all in how you go about things. My 1974 duster had stock frame rails and mini tubs that looked stock. I ran super stock springs and a 14-31 slick on that car.
 
pittsburghracer said:
It’s all in how you go about things. My 1974 duster had stock frame rails and mini tubs that looked stock. I ran super stock springs and a 14-31 slick on that car.
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Oh well that's interesting. Well I guess I can start by seeing what the mini-tubs look like since I already have the kit.
 
MOPARMAGA said:
Oh well that's interesting. Well I guess I can start by seeing what the mini-tubs look like since I already have the kit.
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this was the car. 14-31 was the biggest tire this car could fit springs were in stock location
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pittsburghracer said:
It’s all in how you go about things. My 1974 duster had stock frame rails and mini tubs that looked stock. I ran super stock springs and a 14-31 slick on that car.
Click to expand...
Hey John, do you remember off hand what size wheels & the back spacing was or is to make that tire work, Also I believe a duster has a wider wheel well, I'm not sure how much but if I cut the lip and leave a little to weld back together I have 15.25 from the frame to ww opening.
Lastly how tire much clearance for safety
 
MOPARMAGA said:
Hey John, do you remember off hand what size wheels & the back spacing was or is to make that tire work, Also I believe a duster has a wider wheel well, I'm not sure how much but if I cut the lip and leave a little to weld back together I have 15.25 from the frame to ww opening.
Lastly how tire much clearance for safety
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I’m sorry but I don’t know or remember a lot of details on this car. I bought it from a friend who bought it from a guy that got the car brand new for a graduation gift and made a race car out of it. I bought it as a roller and fine tuned the chassis but didn’t build it. The guy did a beautiful job on the mini tubs and they almost looked stock. As with most of these car and even my black duster the air was removed to install the wheels and slicks then inflated. Almost positive they were 12 inch wheels (centerlines). Sorry I can’t help more.
 
pittsburghracer said:
I’m sorry but I don’t know or remember a lot of details on this car. I bought it from a friend who bought it from a guy that got the car brand new for a graduation gift and made a race car out of it. I bought it as a roller and fine tuned the chassis but didn’t build it. The guy did a beautiful job on the mini tubs and they almost looked stock. As with most of these car and even my black duster the air was removed to install the wheels and slicks then inflated. Almost positive they were 12 inch wheels (centerlines). Sorry I can’t help more.
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Thanks, atleast I got a cool story.
 
Dusters have different wheel wells and openings, they will take a taller tire. I ran a 275 on my Duster and had plenty of room.
 
MOPARMAGA said:
67-76 hardtops have the same wheel openings.
I'm planning to do my own version of a super stock wheel well opening so I can keep the rear in factory location.
Click to expand...

If my car was going to be painted I would've sectioned the front of the opening and moved it forward at least one inch. it makes for a clean job and 99% of the people will never spot the change.
 
72' Scamp.

My D60 is 45.25" width flange to flange. Backspacing is 4". I can fit a 325x50x15 drag radial with room to spare. I got my 31x13.50 BP tires to fit as well, but I have to deflate them to put them on. No biggie.

If I had to do it again (and I probably will someday) I would probably narrow the housing even further so that I don't have to tilt the tire/wheel so much to get them inside of the wheel well.

I also made some pin positioning plates out of 1/4" to move the axle forward and aft if needed. I got everything to fit with the stock gas tank. Took a lot of measuring and planning. I'm happy with the way it turned out

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Just Send It said:
72' Scamp.

My D60 is 45.25" width flange to flange. Backspacing is 4". I can fit a 325x50x15 drag radial with room to spare. I got my 31x13.50 BP tires to fit as well, but I have to deflate them to put them on. No biggie.

If I had to do it again (and I probably will someday) I would probably narrow the housing even further so that I don't have to tilt the tire/wheel so much to get them inside of the wheel well.

I also made some pin positioning plates out of 1/4" to move the axle forward and aft if needed. I got everything to fit with the stock gas tank. Took a lot of measuring and planning. I'm happy with the way it turned out

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Nice work
 
  • justinp61 said:
    If my car was going to be painted I would've sectioned the front of the opening and moved it forward at least one inch. it makes for a clean job and 99% of the people will never spot the change.
    Click to expand...
    I was looking at my quarter panel last night trying to figure a layout because I could nearly get the same thing as a super stock opening just it would be factory looking & only have to make a couple fillers.
    I hope it's not to hot this summer and I'll want to get into that
 
MOPARMAGA said:

  • I was looking at my quarter panel last night trying to figure a layout because I could nearly get the same thing as a super stock opening just it would be factory looking & only have to make a couple fillers.
    I hope it's not to hot this summer and I'll want to get into that
Click to expand...

If done right the only filler piece will be on the top of the wheel well opening.
 
If I remember correctly I had 28x13.5 Hoosier QTP's on my 72 dart with a spring relocation and the tubs widened to the frame rails. only trimmed the lip on the quarter panels. they did rub on the inner tub if you made a hard turn and any real speed.
 
vitamindart said:
If I remember correctly I had 28x13.5 Hoosier QTP's on my 72 dart with a spring relocation and the tubs widened to the frame rails. only trimmed the lip on the quarter panels. they did rub on the inner tub if you made a hard turn and any real speed.
Click to expand...
Ooh yeah I don't want any rubbing.
 
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