Master Cylinder #
What year does casting # 618967 belong?
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Re: Master Cylinder #
Greg------
It doesn't belong to any master cylinder originally used on a Corvette. In fact, it does not look like a GM/Delco casting number. Some Corvettes and other GM cars did use master cylinders manufactured by other manufacturers, notably Bendix and Kelsey-Hayes, but this doesn't look like one of those numbers, either.
If this is a 67+ style dual master cylinder and you find this number on the side of it, it's an aftermarket master cylinder of unknown manufacturing origin. Some later Delco SERVICE master cylinders also had these "strange" numbers on them and were aftermarket master cylinders of unknown origin packaged in Delco boxes.In Appreciation of John Hinckley -
Re: Master Cylinder #
This is for a 1965 non power brake car. I did some research and you may be right - it could be Bendix which was used. I also looked back at previous discussions and found this from Wayne Midkiff:
Wayne Midkiff (3437)
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Join Date: February 29th, 1980
Posts: 3,617
Re: 1965 Judging Manual Question
Quote:
Originally Posted by Mark Pellowski (49021)
Can anyone with a 1965 Judging Manual tell me what it says about a 1965 master cylinder without power brakes. I ordered a JM but have not yet received it.
If I get an original one with the 2225032 casting number with a body and cap painted gloss black will this pass judging ?
Is the 3 digit code under the clip mentioned in the JM ? Seems like it could be a Julian date but it is not confirmed on this discussion board.
Mark -- yes to what the '65 5th ed. manual says about your 2nd paragraph. Doesn't mention date.
Was going to reply to your earlier post, but will add my 2 cents here. I have two '65's; the early one #014xx has the master cylinder shown in the pic [taken with a mirror, then digitally flipped]. The cast # is 618967 (not 2225032, per the JG). It also has the Bendix symbol just like my late car (which does have the cast # mentioned in the JG). The M.C. has a Julian (?) date of '183'.
After learning a few years ago that the 222... # was the accepted correct #, I'd just assumed that the other # was a Bendix service replacement. Don't want to start a controversy, but am now wondering if the 618967 is early production . Apart from the casting numbers, the two mastercylinders look identical.
FWIW, the GM parts book says the master cylinder part # is 3866446 (Bendix # 618690).Comment
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Re: Master Cylinder #
Greg------
Yes, it could be a Bendix number. However, I believe the Bendix numbers provided in the part description section of the P&A Catalogs refer to a Bendix part number for the complete master cylinder assembly and not a casting number. For example, the well-known Bendix casting number for the 65-66 ORIGINAL master cylinders was the 2225032 and that number was never shown in P&A Catalogs. Also, while this was the ORIGINAL casting number, that does not mean that Bendix used the same casting number for all the years they manufactured this master cylinder for SERVICE.
Above all, CASTING numbers are not a positive way to identify master cylinders, be they Delco-Moraine, Bendix, Wagner, or any other. That's because a casting may be manufactured into more than one finished master cylinder. Many master cylinders look alike on the OUTSIDE. That does not mean they are alike on the INSIDE (where it counts).In Appreciation of John HinckleyComment
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Re: Master Cylinder #
Greg -- Sounds like Joe L has pretty well summarized all that is known about the two different casting numbers.
I just re-checked my two (one of each casting #) and see no visible EXTERNAL difference.Comment
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Re: Master Cylinder #
Yes no visible difference and the same "rebuild" kit. I had mine re-sleeved and confirmed with the shop. Sure would like to know who the mgf isComment
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