The suspension vendors might be able to provide the necessary documentation required by the inspectors. If you are planning to change the rear suspension, there are vendors that provide the suspension upgrades that includes new frame rails that will accept wider tires. The frame rail flange is very close at the rear of the existing tub. It has a flange on the frame rail that is bent outwards. The 1969 model stock shock position is very close to the factory tub. Dutton makes a good point about the shock tower. The flange is the part that has many shiny circles that are cut spot welds. The center flange that I am talking about is shown in the photo below. That would be a lot of welding and grinding to make the seams go away. The modification would be invisible.Ĭutting the tub in the middle and adding a strip of sheet metal would require two seams that need to be butt welded together. Take the tub out of the car and bend a new flange using the line as the bend vertex. Then I would mark a long line where the excess metal overlays the outer wheel house. I would cut the center flange off the new tub and fit the tub inside the car. The price and shipping would be an important factor. I would buy either the Dynacorn or Goodmark tub. I know the Dynacorn does not come with the pieces that covers the frame rail notches. You would be buying extra patch metal that you won't need. The DSE tubs come with extra parts to cover the frame rail that has been notched. So need to do this without notching the rails. Otherwise all sorts of headaches will follow. Do it right and do it legal.with their approval. These engineers have seen guys trying to dodge the rules to get cars on roads for years.they are all over it. And to comment on the other post about doing it anyway.our engineers in australia KNOW when you do stuff. To be honest - I am still a little confused as to the best option to widen WITHOUT touching rails. That could work, but would be less fabrication in buying a wider tub that simply fits.be good to get the 100% confirmed.Ĭan anyone add any final comments on this subject to close it out? Others mention cutting and moving the existing tub back to the chassis and creating a filler panel to close the gap. Other comments here infer the 2" can be muscled and finessed to work without modifying the rails? So out of the 3, would seem the Dynacorn unit is the smallest offering, but if you believe what some websites state, that also need notching of the frame rails. So if the description is accurate - you would think the goodmark unit is WIDER than the Dynacorn unit? **Seems to indicate that it is 2 1/4" wider tub. We know the DSE tubs definitely require notching Images looked like they were pulled from the Dynacorn site, so if that is right - camaro central are saying frame rails need to be altered for the Dynacorn unit. ***Note they mention frame rails also need to be modded on this 2" tub option.Īlthough the specs and dimensions closely resemble this: I also notice on Camaro central - they advertise the following: Some people are saying Dynacorn is wider than DSE, others think otherwise. I have been reading around.various forums. I am not greedy with my wheel rubber like some others ) I would be happy enough running a 10" wide that did not rub on anything - that would honestly be plenty for me. This mod does not cut the frame and provides some extra clearance for a 10" wheel.Ĭan the wheel tub width be increased to accommodate a 10" wheel without messing with the frame?įor the record I have the Ridetech 4-link installed, so got all that covered from the suspension side of things. I have also seen other comments about people moving the tub back to the rail, gaining some clearances and essentially fabricating a panel to fill the gap. ideally I would like to avoid this for the previously mentioned reasons. Also costs a lot of money to get these approvals.ĭSE tubs seem to be the clear choice, but I can see you need to notch the frame a little to install them. There are a lot of hoops to jump through, and engineering approvals required, before you can legally drive a vehicle with structural modifications on the road here. In australia, notching or cutting frame rails is a bit of a "no, no". Obviously I understand mini-tubs can provide the clearances I would need to run a 10"+ tyre. I am considering a wider rear wheel option for my Camaro project. I have searched the forums for a definitive answer, but just wanted confirmation I have the right of it.
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