distributor gear ????
I need some help . i just recieved a new distributor side gear from a well known supplier . but to my dismay the gear is wound in the oppisite direction as the one i removed . in there on line catalog it showed 1962 all the way to 74 i believe as the same gear and if you look at there catalog picture it shows it wound the same direction as my origional one . i guess my question is what does the reverse wound gear fit ??? i would like to know so when i bitc* tomorow i can at least tell them what they sent me ... thanks Don ..
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Re: distributor gear ????
The aluminum Mallory tach drive distributors need a conversion kit (which consists of two new gears) to reverse the gear drive. Once this kit is installed, the Mallory is pretty much a fit, form, and function replacement for a stock tach drive distributor.
JimComment
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Re: distributor gear ????
Don-----
I can tell you this: all 1962-74 Corvette PRODUCTION distributors used a tach drive gear of the same configuration. I don't know of any other GM application that ever used a mechanical tach drive. A few late 60's Camaros MIGHT have but, if they did, they used the Corvette distributor.
The only possibility for a reverse tach drive gear configuration that I can think of would be the SERVICE-only GM #1111263. This distributor used a reverse rotation DISTRIBUTOR DRIVE gear for a gear drive cam application. This MAY have also required a reverse tach drive gear to "correct" the tach operation. Actually, I have an NOS example one of these distributors but I never looked at the tach gear.
Parts for these distributors have not been available from GM in years, if any were ever available. Plus, these are a relatively rare, non-PRODUCTION piece. I do not understand why any Corvette parts vendor would even have such gears in stock to ship, mistakenly or otherwise.In Appreciation of John HinckleyComment
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Re: distributor gear ????
That just don't make sense, but if you use any gear and not a new shaft to install in that distributor, you are going to have problems anyway. So the thing to do is get a set. Gear and shaft.Comment
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Re: distributor gear ????
There were a couple of tach drive distribs for the Camaro (I have one, a 1111267 -- released for '67 Camaro) which is identical in appearance to the Corvette units. Apparently it was designed for the 302 Z28 engine. This was strictly OTC. The only "factory" tach drive non-Corvette distr. was the 1111927, which came on those sixty-nine '69 ZL1 Camaros.
Joe -- I also have an NOS ball bearing "263" and I can report that the distributor mainshaft (although different than production tach drive shafts) has the same worm gear cut as regular tach drive distribs. Pic attached of the "263" on the left and a 'standard' K66 mainshaft on the right. Also, when installed with the tachometer cable connection facing the firewall, the gear lies to the driver side of the mainshaft (like all other factory tach drives, but I believe different than the Mallory or Accel)...The only possibility for a reverse tach drive gear configuration that I can think of would be the SERVICE-only GM #1111263. This distributor used a reverse rotation DISTRIBUTOR DRIVE gear for a gear drive cam application. This MAY have also required a reverse tach drive gear to "correct" the tach operation. Actually, I have an NOS example one of these distributors but I never looked at the tach gear....
Comment
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Re: distributor gear ????
There were a couple of tach drive distribs for the Camaro (I have one, a 1111267 -- released for '67 Camaro) which is identical in appearance to the Corvette units. Apparently it was designed for the 302 Z28 engine. This was strictly OTC. The only "factory" tach drive non-Corvette distr. was the 1111927, which came on those sixty-nine '69 ZL1 Camaros.
Joe -- I also have an NOS ball bearing "263" and I can report that the distributor mainshaft (although different than production tach drive shafts) has the same worm gear cut as regular tach drive distribs. Pic attached of the "263" on the left and a 'standard' K66 mainshaft on the right. Also, when installed with the tachometer cable connection facing the firewall, the gear lies to the driver side of the mainshaft (like all other factory tach drives, but I believe different than the Mallory or Accel).
Wayne-----
Yes, now that I think more about it, the "correction" on the gear drive cam distributors was accomplished by the "reverse" distributor drive gear. The distributor shaft, itself, thus turned in the standard direction. So, the tach gear would be the same as standard distributors.In Appreciation of John HinckleyComment
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