Altering wheel tubs on a 68 Camaro... - Team Camaro Tech
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post #1 of 20 (permalink) Old Nov 1st, 18, 08:07 PM Thread Starter
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Shanan
 
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Altering wheel tubs on a 68 Camaro...

Hi guys,

I have searched the forums for a definitive answer, but just wanted confirmation I have the right of it.

I am considering a wider rear wheel option for my Camaro project. Obviously I understand mini-tubs can provide the clearances I would need to run a 10"+ tyre.

In australia, notching or cutting frame rails is a bit of a "no, no". 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. Also costs a lot of money to get these approvals.

DSE tubs seem to be the clear choice, but I can see you need to notch the frame a little to install them. ideally I would like to avoid this for the previously mentioned reasons.

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. This mod does not cut the frame and provides some extra clearance for a 10" wheel.

Do I have that right???

Can the wheel tub width be increased to accommodate a 10" wheel without messing with the frame?

Says something like that here:
https://www.camaros.net/forums/56-pr...ing-frame.html

For the record I have the Ridetech 4-link installed, so got all that covered from the suspension side of things.

I would be happy enough running a 10" wide that did not rub on anything - that would honestly be plenty for me. I am not greedy with my wheel rubber like some others ; )

What are my options?

Cheers,
Shan
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post #2 of 20 (permalink) Old Nov 2nd, 18, 03:20 AM
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Re: Altering wheel tubs on a 68 Camaro...

Your theory is correct. One thing that might be a little easier than making a gap panel would be to buy steel wheel tubs and cut them accordingly if you weren't keeping the stock look. Since they are flat backed, they would tuck up nicely to the frame rail.
http://www.shopcompetitionengineerin...C3006_part.jpg

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post #3 of 20 (permalink) Old Nov 2nd, 18, 03:51 AM
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Re: Altering wheel tubs on a 68 Camaro...

Dynacorn has DSE style minitubs that are slightly narrower and do not require notching of the frame rails. I think AMD sells them too.

Don
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post #4 of 20 (permalink) Old Nov 2nd, 18, 01:58 PM
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Re: Altering wheel tubs on a 68 Camaro...

8" fit in stock tubs, so a 2" mini tub should fit 10" wheels without issue....and no messing with frame rails.

https://www.ebay.com/itm/DSE-Mini-Tu...M8ta:rk:4:pf:0

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post #5 of 20 (permalink) Old Nov 2nd, 18, 02:59 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by DOUG G View Post
8" fit in stock tubs, so a 2" mini tub should fit 10" wheels without issue....and no messing with frame rails.

https://www.ebay.com/itm/DSE-Mini-Tu...M8ta:rk:4:pf:0
DSE minitubs require frame rail mods, hence the additional pieces in the auction you posted. Dynacorn minitubs do not require frame rails mods....

Don

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post #6 of 20 (permalink) Old Nov 2nd, 18, 03:27 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by dhutton View Post
DSE minitubs require frame rail mods, hence the additional pieces in the auction you posted. Dynacorn minitubs do not require frame rails mods....

Don
I stand corrected....thank you

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post #7 of 20 (permalink) Old Nov 2nd, 18, 06:01 PM
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Re: Altering wheel tubs on a 68 Camaro...

I bought a set of one piece Dynacorn wide mini tubs. The are 15.25 inches wide. They are 2.25 inches wider than stock. I had to notch the frame rails.

Patrick
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post #8 of 20 (permalink) Old Nov 2nd, 18, 06:57 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by tp_smith View Post
I bought a set of one piece Dynacorn wide mini tubs. The are 15.25 inches wide. They are 2.25 inches wider than stock. I had to notch the frame rails.
You must have got a special extra wide set This clearly states no frame rail mods needed for Dynacorn inner minitubs:

https://www.ebay.com/itm/68-69-F-Bod...gAAOSw9N1Vw5i4

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post #9 of 20 (permalink) Old Nov 3rd, 18, 06:13 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by dhutton View Post
You must have got a special extra wide set This clearly states no frame rail mods needed for Dynacorn inner minitubs:

https://www.ebay.com/itm/68-69-F-Bod...gAAOSw9N1Vw5i4

Don
Maybe. The Dynacorn website does not make the same claim as the Ebay vendor. I was able to fit an 11 inch wide rim with a 315/30/r18 tire. I could have fit a 335 mm tire, but my rim was too narrow. My car is a 1969 Firebird. I thought the Firebird would be the same as a Camaro. I could be wrong.

Here is a link to the installation of my Dynacorn tubs. Post #56

https://www.camaros.net/forums/133-b...-photos-4.html

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post #10 of 20 (permalink) Old Nov 3rd, 18, 06:43 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by tp_smith View Post
Maybe. The Dynacorn website does not make the same claim as the Ebay vendor. I was able to fit an 11 inch wide rim with a 315/30/r18 tire. I could have fit a 335 mm tire, but my rim was too narrow. My car is a 1969 Firebird. I thought the Firebird would be the same as a Camaro. I could be wrong.

Here is a link to the installation of my Dynacorn tubs. Post #56

https://www.camaros.net/forums/133-b...-photos-4.html
69 Firebird and Camaro are the same.

Don

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post #11 of 20 (permalink) Old Nov 3rd, 18, 07:29 PM
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Re: Altering wheel tubs on a 68 Camaro...

Having gone down the mini tub path i think desribing whats under there as a frame is a stretch.....

67RSSS......owned since 69. A basket case for most of it.
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post #12 of 20 (permalink) Old Nov 3rd, 18, 09:02 PM
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Re: Altering wheel tubs on a 68 Camaro...

OP, If you install DSE mini tubs and don't tell anyone, how would they know

You would have to have in intimate knowledge of these rides, and I'm quite sure most of the basic units out here who might take a look at your ride would never know.
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post #13 of 20 (permalink) Old Nov 4th, 18, 05:19 AM
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Re: Altering wheel tubs on a 68 Camaro...

Having done a 2" mini tub, just get the Dynacorn tubs and massage them where they meet the frame rails so you don't have to notch the rails.
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post #14 of 20 (permalink) Old Nov 5th, 18, 05:00 PM Thread Starter
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Shanan
 
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Re: Altering wheel tubs on a 68 Camaro...

Seems to be some mixed messages in this.....

I have been reading around.....various forums. Some people are saying Dynacorn is wider than DSE, others think otherwise.

So we have:

DSE Tubs
Dynacorn Tub
Goodmark Tubs

So I have been doing a little research.....

DYNACORN:
I also notice on Camaro central - they advertise the following:
https://www.camarocentral.com/1969_C.../she-516wa.htm
***Note they mention frame rails also need to be modded on this 2" tub option.

Although the specs and dimensions closely resemble this:
http://www.dynacorn.com/ShowItem.aspx?item=1041FD
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.

DSE:
We know the DSE tubs definitely require notching

GOODMARK:
https://www.goodmarkindustries.com/p...0-670-68l.aspx
**Seems to indicate that it is 2 1/4" wider tub.

So if the description is accurate - you would think the goodmark unit is WIDER than the Dynacorn unit??

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.

Other comments here infer the 2" can be muscled and finessed to work without modifying the rails??

Is that the consensus?

Others mention cutting and moving the existing tub back to the chassis and creating a filler panel to close the gap.

That could work, but would be less fabrication in buying a wider tub that simply fits.....be good to get the 100% confirmed.

Can anyone add any final comments on this subject to close it out?

To be honest - I am still a little confused as to the best option to widen WITHOUT touching rails.

....And to comment on the other post about doing it anyway...our engineers in australia KNOW when you do stuff. These engineers have seen guys trying to dodge the rules to get cars on roads for years....they are all over it. Do it right and do it legal.....with their approval. Otherwise all sorts of headaches will follow. So need to do this without notching the rails....
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post #15 of 20 (permalink) Old Nov 5th, 18, 05:18 PM
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Re: Altering wheel tubs on a 68 Camaro...

Quote:
Originally Posted by Shan View Post
Seems to be some mixed messages in this.....

I have been reading around.....various forums. Some people are saying Dynacorn is wider than DSE, others think otherwise.

So we have:

DSE Tubs
Dynacorn Tub
Goodmark Tubs

So I have been doing a little research.....

DYNACORN:
I also notice on Camaro central - they advertise the following:
https://www.camarocentral.com/1969_C.../she-516wa.htm
***Note they mention frame rails also need to be modded on this 2" tub option.

Although the specs and dimensions closely resemble this:
http://www.dynacorn.com/ShowItem.aspx?item=1041FD
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.

DSE:
We know the DSE tubs definitely require notching

GOODMARK:
https://www.goodmarkindustries.com/p...0-670-68l.aspx
**Seems to indicate that it is 2 1/4" wider tub.

So if the description is accurate - you would think the goodmark unit is WIDER than the Dynacorn unit??

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.

Other comments here infer the 2" can be muscled and finessed to work without modifying the rails??

Is that the consensus?

Others mention cutting and moving the existing tub back to the chassis and creating a filler panel to close the gap.

That could work, but would be less fabrication in buying a wider tub that simply fits.....be good to get the 100% confirmed.

Can anyone add any final comments on this subject to close it out?

To be honest - I am still a little confused as to the best option to widen WITHOUT touching rails.

....And to comment on the other post about doing it anyway...our engineers in australia KNOW when you do stuff. These engineers have seen guys trying to dodge the rules to get cars on roads for years....they are all over it. Do it right and do it legal.....with their approval. Otherwise all sorts of headaches will follow. So need to do this without notching the rails....
What will the engineers say when you relocate your shocks?

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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