Tubbed or Mini-Tubbed

Racers Hangout

  1. biomedtechguy

    biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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    390/45/15
    :thumbsup: :bananadance:
     
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    • Cojohnso1

      Cojohnso1 Well-Known Member

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      I just replied to a different post asking "Biggest tire you can get to fit." Stock. I tried to see how my Duster's Drag race slick 30"x10.5" (actual size 29.5"x10.4") on 15 inch Weld rims line up in the wells of my street '69 GTX? And as predicted? Close, but would require some well modifications. Having drag race long lug studs? Would also present an issue getting tire on and off. This is with a Dana rear. So I can see why "Mini tub" with a 4link would be very popular.

      A "Full tub?" If you have the power that requires 16"+ tires? It's not a street car. Or at least has no business trying to be a street car. Our track has a class called "King street." 10.5" slick or 12.5" DOT. Racers choice. A mini tub can get a 12.5" tire to fit. Again, anything bigger? In my opinion is not street. Or over tired.

      Recycler.JPG 12394673-1969-plymouth-gtx-srcset-retina-xxl.jpg
       
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      • coloradodave

        coloradodave FBBO Gold Member FBBO Gold Member

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        Mini tubbed to frame, Calvert Mono Springs moved in 3". 15"x12" Billet Specialties Street Lite wheels w/ 5.5" back spacing. 29"x15.0R15LT M/T Sportsman S/R tires (15" section width - 13" tread width)
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        • biomedtechguy

          biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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          • Mike Gaines

            Mike Gaines Well-Known Member

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            Back half with Alston Double Adjustables.
            15x14 Weld wheels. 32" tall Hoosiers with 14" of tread.
            Still have room for a 15x15 wheel and bigger slicks if I want...LOL

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            Last edited: Feb 15, 2020
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            • Mike67

              Mike67 Well-Known Member

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              What did you do for the rear seatbelt outboard sides?...Even though I have a cage I still want to be able to use the back seat...
               
            • biomedtechguy

              biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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              If you think tubbing will get you "in trouble" you'd better not ask about traction at the launch issues with those "rubber bands" you have on the rear wheels...:p:D
              c36.jpg
              My sidewalls are HUGE compared to yours...:poke:
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              • Dan64

                Dan64 Well-Known Member

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                Man , that looks great, any pics of how you ran your exhaust? . I'm looking to run a stock location tank with springs inboard ,3" exhaust and mini tubbed also.
                 
              • Dan64

                Dan64 Well-Known Member

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                IMG_20190815_085335.jpg M&H cheater slick ,I think it's about 29.5 tall with a 14.5 section width.
                 
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                • dvw

                  dvw Well-Known Member

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                  The mini tub is fir sure easier if you dont need room for additional diameter. Heck I did a Duster along with moving the springs into the rails, metal finished in a weekend.
                  Doug
                   
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                  • 69 GTX

                    69 GTX FBBO Gold Member FBBO Gold Member

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                    I did move my axle back about .5 - .75 in case I wanted a taller tire down the road. Gets close at the front of the wheelwell. Slicks also tend to grow more than street tires.
                     
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                    • biomedtechguy

                      biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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                      Wouldn't you like to visit South Louisiana this time of year? There's a number of warm, dry blue sky days...we could mini tub my Roadrunner!
                      :thumbsup:
                       
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                      • 69 GTX

                        69 GTX FBBO Gold Member FBBO Gold Member

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                        It really isn't to hard. I bought new wheeltubs when I did mine. Might be worth the money buying new inners so you wouldn't have to be so careful removing it. I will admit it was a lot tougher at 55 than 25 years of age. If you go full tubs you might have an issue with the back seats also.
                         
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                        • biomedtechguy

                          biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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                          I have some rust/paint issues with my trunk pan. I don't know if it warrants replacement, but if I can, I'm going to do the mini tubs and trunk pan at the same time.
                          There was some issue with the trunk seal that I must have been able to fix without replacing the seal, it's been 7 years so I don't remember. At some point the trunk got water/moisture in it. Someone just skimmed over the rust w/bondo and painted over it..:rolleyes:
                          Mini tubs are down the list, and only if I decide that I need or want more tire than I can fit.
                           
                        • coloradodave

                          coloradodave FBBO Gold Member FBBO Gold Member

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                          Hi Dan, I have a fabbed Moser 8.75" rearend, a custom 21 gallon fuel tank
                          just a little wider than the stock tank and 2.5" exhaust. Mufflers stop just in front of the axle, then the pipes go up and over and then bend outward, going through the opening between the frame and mono spring and then heading straight back. I was told it couldn't be done by a couple of muffler guys before one guy agreed to give it a shot. It's very tight but doesn't hit anywhere. 3" will be tough... DSCN0154.JPG
                           
                          Last edited: Feb 15, 2020
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                          • Bigfoots N Mopars

                            Bigfoots N Mopars Well-Known Member

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                            Fresh mini tubs and spring relocation. 295/65 R15s on 15x10 5.5 back space and room for a little more!

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                            Last edited: Feb 15, 2020
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                            • Dan64

                              Dan64 Well-Known Member

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                              Nice set up, looks really good.
                               
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                              • Torkmnstr

                                Torkmnstr Well-Known Member

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                                Looking good man, I’m running the moser fabbed unit too. 3” exhaust was def tight but my guys were able to snake it as well!

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                                • Ceedawg

                                  Ceedawg Well-Known Member

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                                  Mini tub no frame change, tubbed, frame change. Just remember the closer the suspension point on the rear the more body role in corners, sway bars are a must. Don’t tuck the tires too far under the car , it looks terrible imo, 14” tires are the best compromise, go for it
                                   
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                                  • bwheeler051

                                    bwheeler051 Well-Known Member

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                                    Think about what you want from the car long term. I knew I wanted to run multiple classes with mine. One of them had a 29.5x10.5w tire limit. The tire limit has grown over the years to a 33x10.5W which is a big tire. I still run the smaller 10.5 tire. So I mini tubbed mine. That was 20 years ago.
                                    Mine is ugly but I think you can see from this picture.

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