Help! C-60 w/K-66= correct regulator?

[Mike Z.]

I need to know the correct voltage regulator for a car that has both C-60 & K-66. I have had multi-cars with TI and they all had a #1119515 regulator, just like all standard ignition cars I have seen-located on the inner fender next to the alternator.
Now, I am building an A/C car and it also has TI. In looking in the 66 judging manual, it does not mention any difference in standard or TI, or A/C. However, in judging I have seen used (with C-60 & K-66) a #1116368-the cool looking transistorized piece. The owner said it was correct with combo of C-60 & TI-I yielded to the owner, as I did not have facts to the contrary.
I checked the 66 AIM: under standard equip, UPC 6, ref B4 it calls for #1119515, just like I would expect.
Then I checked under UPC K-66, ref A2, and it just confused me, it has:

1116368 Voltage Regulator Asm.
1119515 C-60

It is printed on two lines, just as I have written. So, does this mean the notel of Voltage Regulator Asm. & C-60 all refers to the #1116368, or does it mean the C-60 refers to the #1119515 only, which is contrary to everything I have seen?
The other thing strange I found on the A2 page is the location it calls for as to where to mount the regulator: not next to the alternator, but rather on the rear of the inner fender, where on an A/C car, is where the battery, removal panel and windshield wash bag are. If I read Noland Adams book correctly in the K-66 section, it calls for #1116368 as standard and the #1119515 with TI-he does not cover the combination of C-60 & K-66-I think he noted the two lines in the AIM and was confused also and it did not get edited.
So, does anyone have a car with A/C & TI (or reference material or factual knowledge of) to verify the correct regulator called for with this combination and where it should be mounted.

Thanks,
Mike Zamora
#12455

[John H.]

Re: Help! C-60 w/K-66= correct regulator?

I checked the 66 AIM: under standard equip, UPC 6, ref B4 it calls for #1119515, just like I would expect.
Then I checked under UPC K-66, ref A2, and it just confused me, it has:

1116368 Voltage Regulator Asm.
1119515 C-60

It is printed on two lines, just as I have written. So, does this mean the notel of Voltage Regulator Asm. & C-60 all refers to the #1116368, or does it mean the C-60 refers to the #1119515 only, which is contrary to everything I have seen?

Mike -

The standard A.I.M. format for that example (on a K-66 page) would indicate that a car with K-66 only would use the 368 transistorized regulator, and if that car also had C-60, it would use the 515 regulator.

I've never been able to make any sense out of that page either, including the regulator mounting illustration. I've never seen a 368 regulator, except in section 6Y of the Chassis Service Manual.

[Wayne M.]

Re: Help! C-60 w/K-66= correct regulator?

I've never seen a 368 regulator, except in section 6Y of the Chassis Service Manual.

John -- here's a 4H (Aug 1964, not the farm club ). I also have a 4K and a 6A. Could never figure out the latter, as I was always under the impression that the 1116368 became the 1116378 in 1967 and they added a 'B' suffix sometime after that. There's a TSB on the problems with the '368' which was corrected by adding a diode to prevent surges/failure when engine was shut off while heavy demand electrical components were operating.

IMO, the '368' Corvette use was only 1965 C60 w/K66, in spite of the AIM(s).

[Ray G.]

Re: Help! C-60 w/K-66= correct regulator?

John -- here's a 4H (Aug 1964, not the farm club ). I also have a 4K and a 6A. Could never figure out the latter, as I was always under the impression that the 1116368 became the 1116378 in 1967 and they added a 'B' suffix sometime after that. There's a TSB on the problems with the '368' which was corrected by adding a diode to prevent surges/failure when engine was shut off while heavy demand electrical components were operating.

IMO, the '368' Corvette use was only 1965 C60 w/K66, in spite of the AIM(s).

Hello Wayne;
Don't know if this helps your discussion.
Have a 1116378B taken off a "police package" metal car in the mid-sixties.
Ray

[Mike Z.]

Re: Help! C-60 w/K-66= correct regulator?

Thanks guys-I had discounted the shop manual because it covers all models. I also know for a fact that steel cars i.e., GTO, Chevelle, Nova, etc. if it had K-66, it called for the transistorized regulator. Have sold a few distributors, amps etc. to steel car guys and they all indicated the use of #368 (64-66). After 66 Pontiac & Olds, went to a capacitive discharge system that was not exact to the K-66 (distributor the same, but amp is quite different), so I have not been involved in 67+ models. Did a distributor for a 67 Nova, and that customer showed the transistorized regulator in his reference material #378, which goes along with the P/N change from 64-66 #368 to #378 in 67).
I have a #378, but have not installed because I can not conclude if Corvettes ever used the transistorized unit-with or without C-6, and don't know where to mount it. However, if anything used a #367, I would lean toward the A/C cars w/TI-such an unusual combo. The mounting location shown in the AIM is still a mystery, especially if the car had A/C.
Has anyone ever seen a transistorized regulator on a Corvette????????????? that you can verify came from the factory with it.
Any other input is appreciated.
Mike Zamora
#12455

[Wayne M.]

Re: Help! C-60 w/K-66= correct regulator?

..... I also know for a fact that steel cars i.e., GTO, Chevelle, Nova, etc. if it had K-66, it called for the transistorized regulator...... to steel car guys and they all indicated the use of #368 (64-66)..
I have a #378, but have not installed because I can not conclude if Corvettes ever used the transistorized unit-with or without C-60, and don't know where to mount it. However, if anything used a #367, I would lean toward the A/C cars w/TI-such an unusual combo. The mounting location shown in the AIM is still a mystery, especially if the car had A/C.
Has anyone ever seen a transistorized regulator on a Corvette ????? that you can verify came from the factory with it ....

Mike -- look in Noland's Vol 2, pg. 280 for a pic of a L78 (early car as Jack H points out, due to radiatior hose connect). This was a Road & Track test. Of course, per the AIM, it should be the K66/C60 cars that have them, not the L78.

What you say about steel body Pontiacs might explain why I have a '368' dated 6A. I enclose a pic of a '378B' that I put on my '65 L76 C60 K66 (you can see the 3 original holes where the amp installs on the left rad support). In '65, the transistorized volt reg mounts in the same 3 holes on the fender as the regular VR, but due to the mounting legs on the transistorized units, you can't use the same shock-mounted rubber nut with brass insert, as the original screw is not long enough.

I'll dig out that TSB.

[Mike Z.]

Re: Help! C-60 w/K-66= correct regulator?

Thanks Wayne for the pic. I have a #378 dated 0 G 5 that I was planning to run until I find a closer date for my July 66 car-if I understand your reply, the #378 will substitute for the #368.
So, it seems you are convinced that if the car has C-60 and TI, then the transistorized reg is called for-at least on a 65, based on your experience. Did your car come with it, or did you add it?
Do you have any knowledge of 66 models with the same combination and also 67-my customer car. I have to admit, I am adding the TI to my A/C convertible (Duntov Award car), and want to do it correctly. Have TI on our other 2 66 models and want to convert the A/C car.
Thanks,
Mike Zamora
#12455

[Wayne M.]

Re: Help! C-60 w/K-66= correct regulator?

.... I have a #378 dated 0 G 5 that I was planning to run until I find a closer date for my July 66 car-if I understand your reply, the #378 will substitute for the #368.
So, it seems you are convinced that if the car has C-60 and TI, then the transistorized reg is called for-at least on a 65, based on your experience. Did your car come with it, or did you add it?
Do you have any knowledge of 66 models with the same combination and also 67-my customer car. I have to admit, I am adding the TI to my A/C convertible (Duntov Award car), and want to do it correctly. Have TI on our other 2 66 models and want to convert the A/C car......

Mike -- here's a link to a previous thread that discusses much of what is controversial about these transistorized volt regs, and to which model year they might have been factory installed.

https://www.forums.ncrs.org/showthread.php?t=65307&highlight=1116368&uid=4343

As to my '65 (Nov '64 production), it had a conventional '515' v.r. on it when purchased in 1980, but the date is 5L, so I assume (dream ? ) that the original '368' lasted about 1 year, then was replaced.

In the above link, IMO, Dick W. was a little harsh. I've been running the finned volt reg for over 15 years with no problem. In my post, you can see pics of the Tech Service Bulletin. It's dated April 1965, so they knew then they had a problem, and they describe a temporary solution. Now the weird part is that when they modified the circuit board of the '368' for the additional diode [at which point I think it became the '378'], in the GM parts books they continue to offer both; initially requiring a core charge for the '368'. Then, sometime between Oct '67 and July '69, this first design seems to disappear from the parts history, without supercession. At that time, a core charge is then asked for the '378'.

[Loren L.]

Re: Help! C-60 w/K-66= correct regulator?

My information is that the 378 regulator was never used on the Corvette except as a service replacement. My excerpt of the Delco Remy application index, pg 24 shows that in 1966, the "Regulator For ll00693-696--750 =s 1119515".
The production card from Delco-Remy for the 368 shows 426 units for production in 1966 but Pontiac is shown for 66 & 67 as a production user.
As a piece of information that is probably not germane to your '66 car, there were at least 2 very late 65 optional motor TI/A/C cars that did NOT use the regulator mounting holes. The sheet metal screws that came with the regulator were just driven straight through the fiberglass of the inner fender, ie NO rubber mounts.
Further, the production dates on 368 regulators show only about 3 or 4 different dates due to the low usage. Judges should be alerted to the fact that this may be an item that might violate the "iron clad standard" of 6 months.