I'm going to take the 66 in for new brake shoes and a bleed of the system as the pedal has been going quite low and this has not been done in six years. I may need new rotors as well. When they measure the rotors what is the minimum thickness necessary? Thanks for the help.
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1.215" minimum thickness -- 1.250" new *NM*
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Re: 66 Power Brakes.
Don't know where you're taking it, but if the rotors measure within specs and aren't visibly scored or damaged, don't remove or replace them, or let the shop remove them and "turn" them; most brake shops just love to turn or replace rotors, which can lead to many other problems on Corvettes, as the average brake shop knows zilch about lateral runout issues on our cars. If you use OEM pads, Corvette rotors will last almost forever.Comment
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Re: 66 Power Brakes.
John and Rick----
I can testify to that fact. I've used nothing but original GM pads on my 1969 since it was new. A total of TWO sets in 200,000 miles---the original set and one replacement set. My rotors are virtually at new thickness of 1.250".In Appreciation of John HinckleyComment
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Re: 66 Power Brakes.
Joe - what is the current part number of the GM pads.....I am about ready to install my new set of VB O-ring calipers on my 67 and want to insure I use GM pads to prevent undue abrasion. Thx!...CraigComment
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Re: 66 Power Brakes.
Craig-----
The current GM pads are not the same as the old variety since the originals used asbestos and the current, of course, do not. However, I still think that the GM pads will perform best. I just don't know if they'll have the longevity and rotor-friendliness of the originals. The current pads are GM #18024741.In Appreciation of John HinckleyComment
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Addendum
The brake pads I mentioned may have been rather recently superceded by GM #18028641. Another pad now available from GM for 65-82 Corvettes is GM #18039837. If I were going to use currently available pads on my car (I probably won't have to since I've got a supply of the originals that will last me for about the next 500 years[none for sale]), I would use the 18039837. These are both a non-metallic, organic pad, but I think that the 18039837 are the better of the 2.In Appreciation of John HinckleyComment
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Re: Addendum
Thx Joe - as always your input is very much appreciated. I am keeping my original rotors but some idiots turned them in the past (the front rotors especially) and one is at 1.217, the other at 1.225, although the finish is nice. But, at Carlisle year before last, I found 3 new NOS rotor/hub assemblies for 65-68, for $75 each, still in GM boxe from the early 70's (I think about 1972 and 1973 vintage). So I am installing these on my 67 when I put the calipers on, and want the least abrasive pads I can find to baby the new rotors. On my 74, like you, I have virtually zero wear on the rotors, I see no reason these things can't go forever.
Out of curiousity, have they really removed the asbestos out of all brake lining material, I thought I saw something recently that many still have this in the linings. Same with clutches....I always use care in this area, with lots of brake cleaner and no air to avoid raising dust. But I see the guys in brake shops such as Brakemasters, BrakeMax, Mida, you name it, still blowing the dust away with air hoses...not me!....later, CraigComment
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Re: Addendum
Joe - another question....this is listed as a pad kit with no description...does a pad kit cover one rotor or two? I know most aftermarket kits cover an axle, not sure about this kit. Thx!...CraigComment
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Re: Addendum
Craig-----
Since August, 1992 it has been illegal to sell any automotive brake or clutch part containing asbestos in the US. After that date, it's even illegal to sell old stock parts which contain asbestos, but that's widely ignored. However, you won't find many commercial sources selling asbestos-conatining brake or clutch parts. I don't think that any have been manufactured in years, either. There may or may not be an exemption for HD truck parts. I don't think so, but it's possible.
GM pads are sold as an axle set (2 rotors worth)In Appreciation of John HinckleyComment
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Re: Addendum- Thx Joe!! *NM*
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Re: Addendum
Just bought two axle sets from the Chevy dealer for my '67 - GM# 18028641.Comment
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