1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone here? - Team Camaro Tech
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post #1 of 10 (permalink) Old May 11th, 12, 03:10 PM Thread Starter
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1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone here?

I'm building my 69 Firebird with a Pro touring flavor its been minitubbed and should fit 17x11 and a 315/35/17 without an issue and was wondering how large can I go up front? I've done 16x8 255/50 on another car that fit easy, now I want another inch and a 275/40/17. I have a stock subframe that will have ATS spindles C5 brakes and Global west UCA's on it I know I can move the wheel inboard farther with more positive offset with the UCA's. I have searched and not found much info on this so i thought I'd ask who has tried to stuff that much tire with a stock subframe? I have seen Carl C. 67 with that large but not a 69? I was in the tire buisiness up until 12 yrs ago and didnt do alot of tight fitments like this

69 R/S Z/28 302 X33 D80 late 09C
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post #2 of 10 (permalink) Old May 15th, 12, 09:30 AM Thread Starter
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

no one?

69 R/S Z/28 302 X33 D80 late 09C
69 T/A clonification LS6-6speed under construction
15 ZL1
64 Chevelle wagon 6.0l planned sons toy
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post #3 of 10 (permalink) Old May 15th, 12, 09:59 AM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

Rich it's been hashed over a lot, most will tell you the max on a '69 without removing or modifying the inner fender is the equilivant of a 245/45/17 on a 17x8.5 with 4.75 back spacing.

I don't know how you got a 255/50 on a 16x8 inside a '69 front fender, it's .8" wider and .4" taller than a 245/45/17 which rubbed on the outer fender lip and at lock to lock on the inner frame on 17x8.5 with 4.75 bs on my '69. I ended up running 235/45's and they still scuff lock to lock in the inner frame.

...Dennis

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post #4 of 10 (permalink) Old May 29th, 12, 04:28 PM Thread Starter
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

Dennis heres the old 69 that had 16x8 Ronals on it with 255/50/16's= they fit fine with no issues

69 R/S Z/28 302 X33 D80 late 09C
69 T/A clonification LS6-6speed under construction
15 ZL1
64 Chevelle wagon 6.0l planned sons toy
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post #5 of 10 (permalink) Old May 29th, 12, 05:04 PM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

Look how high that car sits, the top of the fender is above the tire...

...Dennis

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post #6 of 10 (permalink) Old May 29th, 12, 05:12 PM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

I know you have stock subframe but if you want it to be low and riding in the sky look into a DSE subframe. There is a person named Carl not sure of the last name that has a red 68 with larger than normal tire/wheel combo on a 68. He has website explaining all that was done. You will have to search for that one though...I hav no idea where it's at.

I think his last name is Casanova???? Something like that. His car is run at track events all the time and was on a TV show....They guy driving it loved it.

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post #7 of 10 (permalink) Old May 29th, 12, 05:16 PM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

Here's a guy who put 275's on the front of his 67. "Stock" subframe, then modified. https://www.camaros.net/forums/showthread.php?t=187655


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post #8 of 10 (permalink) Old May 29th, 12, 07:27 PM Thread Starter
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

well my sub is already coated and I don't like making it thinner like that (read Weaker) I have seen Carl Casanova's site and he got them to fit on a 67 but the 69 is different thats what I'm working on and my green 400 car ablove really isnt that high up but I have always thought lower would be better. so realistically 8" is about as big as been done? how wide a 245/50? I really like the stuffed with tire look but a 8k subframe is too much for my budget for my Tirebird

69 R/S Z/28 302 X33 D80 late 09C
69 T/A clonification LS6-6speed under construction
15 ZL1
64 Chevelle wagon 6.0l planned sons toy
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post #9 of 10 (permalink) Old May 29th, 12, 08:31 PM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

I hear you on the sub frame cost from DSE but that price is for a complete suspension also....like the soothes the pain any...LOL!!

I have no idea what they did so you can tuck such a big wheel in the wheel well but maybe a stock one can be modified?

"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......
Then, you have enough horsepower."
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post #10 of 10 (permalink) Old May 29th, 12, 08:36 PM
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Re: 1969 stock subframe front wheel fitment- 9"? 9.5"? Who has gone he

I think the bottom line is - yes, you can stuff a 275 in the front with a stock subframe on a 69 if you have the correct backspacing and upper control arm, but it will be at the expense of a drastically reduced turning radius.


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