Front Disc Conversion question - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 12 (permalink) Old Jan 3rd, 12, 03:57 PM Thread Starter
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Steve
 
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Front Disc Conversion question

I called Right Stuff to ask if their kit for my 67 Camaro would move the wheels outward 3/4 " like I have read on here and he said only that "it should not be a problem because our kit is based a factory 69 Camaro disc set up" and could not offer anything further. Because I just put on TT II wheels with 3.75 backspace and they fit fine now, but I think another 3/4" outward will cause a problem with rubbing on the fender lip.
My tires are 216/65 R15.
Has anyone installed the disc conversion with 3.75 backspacing or any ideas or thought on this?
Thanks,
Steve
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post #2 of 12 (permalink) Old Jan 4th, 12, 08:07 AM
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Re: Front Disc Conversion question

I did it with ralley wheels with a 4" back space and no problems

67 R/S Blue 406 518HP and 504TQ Dart block,Callies crank,Mahle pistons,Ultradyne cam 230/238 duration @.050 530 lift at 113 lsa, Afr 195 heads,Holley 4150HP carb and RPM Air gap. TKO600 with 373 gears
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post #3 of 12 (permalink) Old Jan 4th, 12, 08:41 AM
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Re: Front Disc Conversion question

First I don't think it's ever been said that disc conversions move the wheel out 3/4". The big brake conversions using a drum hub require longer studs because the thickness of what is refered to as the "hat" area of the rotor is thicker than the drum. At that, the difference is about 3/16" maybe 1/4" but certainly not 3/4".

I don't know if there is a difference from drums to factory disc's, except for the one boss on the spindle the mounting surface for drum and disc is the same.

Your 3.75" backspacing is not optimal if you have 7" or 8" wide wheels. As an example I just switched from 15x7 (4.25" bs) rally wheels to some 15x7 restored vintage American 200s using the same 215/60/15 tires on the '72 Nova (stock height) and the tires hit the upper most fender bolt on even the smallest bumps. The rallys never hit or rubbed!

Now your '67 with round wheel wells is a lot more forgiving depending on if the car is stock height or lowered. If you are not having any problems with the tire/wheel combo you have with drum brakes a stock style disc conversion probably isn't going to cause you any problems.

Get a second opinion from a vendor that sells a lot of brake conversions, Matt's Classic's comes to mind.

...Dennis

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post #4 of 12 (permalink) Old Jan 4th, 12, 09:46 AM
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Re: Front Disc Conversion question

I purchased the complete front disc conversion from Matts Classic bowties and I am running 215/65/15 on front with 4 1/4" backspacing with no problems at all
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post #5 of 12 (permalink) Old Jan 4th, 12, 10:03 AM
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Re: Front Disc Conversion question

I converted from drum to disc up front on my 68 with no rubbing and I even put on 2" lowering coils.
I also have TT2 wheels 17x7 4"bs
225-50 tires
also check my thread https://www.camaros.net/forums/showthread.php?t=199931 with helpful pix of the swap I just did.

my Magnaflow X-pipe system sound clip, click the link


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post #6 of 12 (permalink) Old Jan 4th, 12, 12:54 PM Thread Starter
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Steve
 
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Re: Front Disc Conversion question

Thanks to everyone for the help and input.
JR68 your thread link on your conversion swap is great and was really a big help.
I think I am ready to go for it, just need to check Matt's out and see what they have and how much, I was not familiar with them, I just heard a lot of people talking about Right Stuff on here. I also contacted Classic Performance (CPP) but no response yet on my questions.
Thanks again everyone
Steve
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post #7 of 12 (permalink) Old Jan 4th, 12, 02:36 PM
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Re: Front Disc Conversion question

Steve I installed a CPP system

my Magnaflow X-pipe system sound clip, click the link


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post #8 of 12 (permalink) Old Jan 4th, 12, 04:15 PM
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Re: Front Disc Conversion question

If the kit includes factory disc spindles, it should correct the lengthening issue. however, if you use factory drum spindles, it will push the wheel out some.

The only Mustang I'd ever own is a Fender.

'68 333" Camaro
'14 5.0 Mustang
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post #9 of 12 (permalink) Old Jan 4th, 12, 04:57 PM Thread Starter
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Re: Front Disc Conversion question

That's good news JR68 , CPP says their kit push's the wheels out but only 3/8 of an inch
Any other issues I might run into?, did you use the 11" booster
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post #10 of 12 (permalink) Old Jan 4th, 12, 06:40 PM
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Re: Front Disc Conversion question

I have manual brakes

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post #11 of 12 (permalink) Old Jan 22nd, 14, 06:10 AM
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Re: Front Disc Conversion question

I bought the kit from Matt's and had it installed before Christmas, it did push the tires out a little. Not sure exactly how far, but I would expect 3/8".

67 Vert RS/SS 350 4 SP
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post #12 of 12 (permalink) Old Jan 22nd, 14, 06:15 AM
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Re: Front Disc Conversion question

I'm running TT II's with 3.75" BS and front discs with no issues, and I'm running 215/70's.

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