65 Transistorized VOLTAGE REGULATOR?

[Mike Z.]

Had a customer ask me a question: in the 65TIM&JG, 6th edition, page 175; "Regulators on L76-365 hp, L79-3550 hp cars with air-conditioning and transistor ignition, L-78-425 hp & L84-375 hp with K-66 use part number 1116368."

I have serviced k-66 for many years and have only experienced transistorized voltage regulators on "steel" cars with the combination of K-66 w/air-conditioning combination. I have not experienced a customer with K-66 with a transistorized voltage regulator in a Corvette, regardless of air-conditioning or hp rating.

I can almost understand cars equipped with a combo of A/C and K-66, to go along with the other Divisions at the time; but, I do not understand the L-78 and L-84 which did not have A/C as a co-option. My personal L-84 has K-66 from the factory, but no transistorized voltage regulator, nor does my customer's (L76 w/AC) who asked me the questions looking for a #368 regulator.

So, is the book wrong or does anyone have added information on this subject? Has anyone seen a "368" installed in a Corvette?

[Dick W.]

Re: 65 Transistorized VOLTAGE REGULATOR?

They were installed, however I do not know if each and every one of the cars got one. Used to have a Sun tester to test those regulators.

[Jimmy G.]

Re: 65 Transistorized VOLTAGE REGULATOR?

65 365 A/C TI has one and dated to the car

[Loren L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

1116368 is correct; #23561, L79/C60/TI has one - but it's not quite that simple. 1116368 is another example of what Joe Lucia calls "production only" part #s; the SERVICE part # is 1116378. Somewhere I have a copy of the Delco Remy "Inventory" card that shows production 1964-69, with ONE unit being made in 1969 - I suspect for a Delco administrator who had one of those cars.

[Mike Z.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Thanks guys for the feed back and comments. You all zeroed in on the car/motors available with A/C as a POSSIBLE co-option. Actually, I agree with all of your comments, as I mentioned initially, but indicated I had never seen a #378 in a Corvette-you have educated me.
My issue is: the manual says the couple of hp motors that you could order the K-66 and A/C combo (as all of you have mentioned), but it also says the 396 (which co-required K-66) & fuelie if optioned with K-66, both also would require the #378 reg.

I checked the AIM, and it does have a note in K-66 section re: #378 w/C-60, which confirms what has been said. However, it does not mention 396 or fuelie.

I have spent the last few hours calling several friends, customers and a couple of fuelie experts (that I will not name) and none have seen #378 on a fuelie, regardless of ignition. I, unfortunately do not have 396 cars separated out in my data base-I just remember most of the fuelie customers, because I have one.

So, is the manual incorrect? Or, do I need to install a #378 on my fuelie?

[Don H.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Mike
I suggest you contact Gary Summerville down in TX. I think he co-wrote the 65 Mech section, and has owned many 65 fuelies and he knows them well, and I bet he will say he has never seen your 378 reg on a fueler. You can find Gary in Member's List under Community in the small tool bar above. Members names are sorted by first name.

[Mike Z.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Thanks Don, Gary was one of the experts I referred to. He indicates he knows of no #378 on a fuel car. So, if anyone is a 396 specialiest we can all but rule out 396 & fuel cars requiring the #378, and only the combo of K-66 and A/C would have had the possibility of #378. Maybe this will be corrected in the next manual up-date.
Thank you all, Mike

[Joe L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Thanks guys for the feed back and comments. You all zeroed in on the car/motors available with A/C as a POSSIBLE co-option. Actually, I agree with all of your comments, as I mentioned initially, but indicated I had never seen a #378 in a Corvette-you have educated me.
My issue is: the manual says the couple of hp motors that you could order the K-66 and A/C combo (as all of you have mentioned), but it also says the 396 (which co-required K-66) & fuelie if optioned with K-66, both also would require the #378 reg.

I checked the AIM, and it does have a note in K-66 section re: #378 w/C-60, which confirms what has been said. However, it does not mention 396 or fuelie.

I have spent the last few hours calling several friends, customers and a couple of fuelie experts (that I will not name) and none have seen #378 on a fuelie, regardless of ignition. I, unfortunately do not have 396 cars separated out in my data base-I just remember most of the fuelie customers, because I have one.

So, is the manual incorrect? Or, do I need to install a #378 on my fuelie?

Mike------


According to GM, the only Corvettes which got the external mount transistorized regulator were those 1965's also equipped with SHP engine (i.e. L-79, L-76) AND also equipped with C-60 AND K-66. It's as simple as that. No other 1965 SHP Corvette (i.e. L-84, L-78) could have received that regulator because none were available with C-60.

[Loren L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

To state it again, 1116378 is A SERVICE REPLACEMENT - IT WAS NOT BUILT AT ST LOUIS IN 1965 WITH THAT REGULATOR.

[Joe L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

To state it again, 1116378 is A SERVICE REPLACEMENT - IT WAS NOT BUILT AT ST LOUIS IN 1965 WITH THAT REGULATOR.

Loren------


No need to restate it; neither I nor anyone else here has said that the GM #1116378 was ever originally used on any 1965 Corvette. However, the GM #1116378 was not only a SERVICE regulator. It was used in PRODUCTION for all 1966-69 Chevrolet models with 62 amp alternator. It may or may not have been used on 1966 Corvettes with L-79, C-60 and K-66.

Also, the GM #1116368 regulator was once available in SERVICE. However, it was discontinued sometime about 1968 and replaced, for SERVICE, by the GM #1116378.

One other thing: both the GM #1116368 and GM #1116378 were initially available in SERVICE as NEW parts. However, shortly thereafter they became available, "officially", only as "rebuilt" parts and required a core deposit on purchase. Now, this does not mean that every one of these regulators sold after the change to rebuilt status was actually a rebuilt part. What it means is that, "officially", they were rebuilt units. Some may well have been brand new but a customer could not complain if they got a rebuilt unit since that's all that GM was "officially" providing.

[Kenneth F.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Would someone know what GM used this Delco Remy transistorized regulator for? The numbers are 398 12v M3. It has a red, black, and green wire.

Ken

[Joe L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Would someone know what GM used this Delco Remy transistorized regulator for? The numbers are 398 12v M3. It has a red, black, and green wire.

Ken

Ken------

The GM #1116398 regulator was used for GM applications which also were equipped with a series 20DN alternator. No Corvette or passenger car was ever equipped with such an alternator. So, I'd say MD/HD trucks, industrial engine applications and, possibly, light aircraft.

[Mike Z.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Thanks Joe, your opinion again verifies, that it is not likely applications within the 1965 Corvette model; would have come with a transistorized voltage regulator UNLESS it was equipped with SHP, K-66 AND air-conditioning. Threrfore, as presently printed the TIM & JG is incorrect to indicate L-84 & L78 would also have required the transistorized voltage regulator-correct?

[Mike M.]

Re: 65 Transistorized VOLTAGE REGULATOR?

one of our 65 FI's is a transistorized IGNITION and it came with its original 515 standard external voltage regulator. mike

[Joe L.]

Re: 65 Transistorized VOLTAGE REGULATOR?

Thanks Joe, your opinion again verifies, that it is not likely applications within the 1965 Corvette model; would have come with a transistorized voltage regulator UNLESS it was equipped with SHP, K-66 AND air-conditioning. Threrfore, as presently printed the TIM & JG is incorrect to indicate L-84 & L78 would also have required the transistorized voltage regulator-correct?

Mike-----


According to GM, that's the way it was; L-78 and L-84, not being available with C-60, were not equipped with the transistorized voltage regulator. Is it possible that some were originally so-equipped as a factory mistake? Yes, I'd say it's possible as long as the wiring harness was compatible (which I doubt).