Rotors for 1967 GTO - Pontiac GTO Forum
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post #1 of 9 (permalink) Old 02-16-2019, 01:29 PM Thread Starter
 
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Rotors for 1967 GTO

Hello everyone, I must say this GTO forum is excellent.
I'm wondering if anyone knows what year rotors will bolt onto my 1967 GTO?
I have been told 1969 to 1972 A Body will fit, is this correct?
Thanks for any help

Last edited by Finn Engsig; 02-17-2019 at 10:33 AM.
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post #2 of 9 (permalink) Old 02-17-2019, 06:03 AM
 
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Are you asking about REPLACEMENTS or CONVERSIONS (Drum to Disc)?

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post #3 of 9 (permalink) Old 02-17-2019, 10:32 AM Thread Starter
 
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Yes I'm looking to replace the front drum brakes with rotors on my 1967 GTO. However I would like to use the existing spindles.
I had heard that 1969 to 1972 A Body rotors will fit, is that correct?
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post #4 of 9 (permalink) Old 02-17-2019, 12:31 PM
 
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I'm not sure why you would be interested in keeping the spindles, but I assume you know that both rotors and calipers will need to be replaced. The 67-68 GTO's used Corvette brakes (i.e. 4 piston fixed caliper), so I'm assuming it isn't to give the appearance of originality. You could probably find a take-off set pretty easily from someone who has done a suspension upgrade at a place like pro-touring.net. Any 69-72 A-body should work, I believe.
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post #5 of 9 (permalink) Old 02-17-2019, 02:36 PM
 
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Scarebird is a well known source and has favorable reviews for his stock spindle disc conversion kits.


https://scarebird.com/index.php?rout...tegory&path=63

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post #6 of 9 (permalink) Old 02-17-2019, 03:48 PM
 
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Quote:
Originally Posted by 67King View Post
I'm not sure why you would be interested in keeping the spindles, but I assume you know that both rotors and calipers will need to be replaced. The 67-68 GTO's used Corvette brakes (i.e. 4 piston fixed caliper), so I'm assuming it isn't to give the appearance of originality. You could probably find a take-off set pretty easily from someone who has done a suspension upgrade at a place like pro-touring.net. Any 69-72 A-body should work, I believe.

Hmmm. I don't think the '67-68 4 piston set-up were the same as Corvette 4-piston disc brakes, although they are a 4-piston design like the Corvette. 1969 and up used the single piston which in my opinion is just simpler in design.

You did not say if you have power drum brakes or non-power, or if you plan on using non-power disc or power disc?

What can cause a problem is the size of the rotor you use. Larger rotors will not clear some factory sized rims, and some will require aftermarket rims for use. Another problem can be rim width. You may need a wider rim or different rim offset so brake parts do not rub on the inside of the rim.

Not a brake expert on all this, but you also want to make sure you have matching master cylinder, proportioning valve, and any other needed parts.

Option #1 - You can do a complete A-body disc brake conversion which requires the disc brake spindle as the drum brake spindle is different. You will need to grab everything as a complete set-up as there can be differences in years and you don't want to mix & match parts.

Option #2 - Aftermarket. Many suppliers offer a conversion kit. Some install without problem, some seem to have a few snags that create problems.

Checked out the Scarebird set-up which looks like it will work, but you will have to supply the needed rotors/hubs & calipers. It also sounds like the rotors recommended may be smaller, 10.25" than the factory 11" rotors.

You may want to read the first post found on the Chevelle website. Gives a pretty detailed view of options and parts. https://www.chevelles.com/forums/16-...on-basics.html
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post #7 of 9 (permalink) Old 02-17-2019, 04:27 PM
 
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Quote:
Originally Posted by PontiacJim View Post
Hmmm. I don't think the '67-68 4 piston set-up were the same as Corvette 4-piston disc brakes, although they are a 4-piston design like the Corvette. 1969 and up used the single piston which in my opinion is just simpler in design.
Calipers are completely interchangeable. I am pretty sure that the numbers on mine indicate they were actually off of a Corvette. I had always wondered when I sent them to have them sleeved in the early 90's if the place there didn't just do an exchange. Not sure if if the rotors or spindles are different, but the calipers are not.

To your point about the wheels, good point. I don't recall how proud of the hub face teh calipers were, but I know that I couldn't run American wheels on mine, as the spokes would hit the calipers. I know the Wilwood aftermarket ones are not proud of the hub, or at least the 6 piston ones, but they also require 17" wheels, so it depends on what all the OP wants to do. And of course budget is a big issue. The "easy" answer would be to change the whole suspension to get better handling, but it is NOT cheap. FWIW, if that is something desired, the guy who started Global West is a GTO guy. He has a 65 and a 66.
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post #8 of 9 (permalink) Old 02-17-2019, 06:42 PM Thread Starter
 
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Thanks for your help.
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post #9 of 9 (permalink) Old 02-17-2019, 06:45 PM Thread Starter
 
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Thanks for the link, I've looked at the site and it has some nice product.
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