What is correct part for 63/64 ignition switch

[Larry M.]

The 64 AIM page D149 Section 6 B4.00 shows a 1116635. There are two reasons I'm asking.

This page is the only page which shows how to mount the voltage regulator and only shows a fender mount with well nuts when most were mounted on the radiator support below the horn relay. Any time a page has such a gross omission I wonder about it's origin and accuracy.

Multiple people offer the 1116650. A Corvette restoration guy on ebay for $325 (wow) and Norm Werner, Werner's Corvettes, $165 (small wow) as examples. Ebay is not a reliable source but Norm has been doing this a long time.

I've never had mine out to look but want to buy an NOS part for reserve. The two parts mentioned above have different necks (although I've never actually seen the 6635 NOS, just repros)

Any help would be appreciated.

[Harry S.]

Re: What is correct part for 63/64 ignition switch

The 635 is correct for 63.

[Dan H.]

Re: What is correct part for 63/64 ignition switch

Still have my 635 in my Mar 64 Coupe.

[Peter L.]

Re: What is correct part for 63/64 ignition switch

Larry - The Jan. 1, 1973 CHEVROLET Parts History shows "1116635 USE 01116650 07-66" & as far as the "different necks" both Delco-Remy 1116635 & 1116650 switches visually look to me to be identical except for the numbers "635" or "650" embossed on the face of the step of the metal housing. In addition, the rear ''Bakelite" piece & connector configuration of both switches look to be identical. Pete

[Dan H.]

Re: What is correct part for 63/64 ignition switch

Larry, make sure you can only remove the key in the 'on' and 'lock' positions. Had to replace the tumblers to get mine working correctly, in addition to 2 NOS keys from Peter. Good luck,
Dan

[Larry M.]

Re: What is correct part for 63/64 ignition switch

So I said above that I'd never seen a 635, only repros. Since you are saying that the 635 and 650 necks look the same then the repro versions on the 635 are probablty what is different. To help me close the loop, do you have a picture of a 635? But I think I already know the answer. We'll see. I googled things to look at pics and found an old post where Joe Lucia indicates the 635 and 650 were superceded by the GM89058107/D1437F/US26, most likely all made by Standard Motor Products. These all look like the repro I've seen and likely are the same thing. The neck is threaded about four times as far as the 650 which I have seen in pics. I think they come with a stop nut to allow you to adjust for dash thickness. The 650 is only threaded about eight threads and has ribs which create shoulders to stop it on the back side of the dash. I'm guessing that if you show me a 635 this is how it will look.

[Larry M.]

Re: What is correct part for 63/64 ignition switch

Looking further at switches, from pictures the 1116664 for 65 Buicks looks identical to the 6650. Wondering what the difference is. One guy showed a switch diagram and it did not include the LOCK position. This may be it although my logical thought is that the lock function is in the cylinder and not the switch. But even so, maybe it is the degrees of rotation between functions. Does anyone know?

[Tom P.]

Re: What is correct part for 63/64 ignition switch

My November 62 SWC had a 650 which I believe to be original. I assume the 635 was another of those 63 "running changes"?

[Harry S.]

Re: What is correct part for 63/64 ignition switch

Larry, make sure you can only remove the key in the 'on' and 'lock' positions. Had to replace the tumblers to get mine working correctly, in addition to 2 NOS keys from Peter. Good luck,
Dan

I agree with Dan, whatever switch you select make sure you can pull the key out as your can with the 635 witch. I can pull the key from my 635 switch while driving the car an unlock the glove box

[Larry M.]

Re: What is correct part for 63/64 ignition switch

In an April 2016 post titled Part Number Question for Joe Lucia Joe replied that the 6635 was disco in July 66 and repl by the 6650. And the 6650 was disco 35 years ago.

[Harry S.]

Re: What is correct part for 63/64 ignition switch

In an April 2016 post titled Part Number Question for Joe Lucia Joe replied that the 6635 was disco in July 66 and repl by the 6650. And the 6650 was disco 35 years ago.

Joe is correct. NOS 635 and 650's are still around bur pricey as you indicated. If you are not having your car judged any switch will do. If you are going through PV then you need one that works as the designer of the 635 unit specified.

[Larry M.]

Re: What is correct part for 63/64 ignition switch

Joe is correct more often than not

[Gary B.]

Re: What is correct part for 63/64 ignition switch

Joe is correct more often than not

Larry,

Way, way more often than not, I'd say!

Gary

[Larry M.]

Re: What is correct part for 63/64 ignition switch

If Joe Lucia or anyone else with the books picks this up, what GM products was the 1116650 used on. Might be a way to find a used one.

[Larry M.]

Re: What is correct part for 63/64 ignition switch

I have a line on a used one which is why I asked about other models above. But this question. To remove a lock cylinder when you don't have the correct key, isn't i't true that any key for that model of car will allow you to remove the lock cylinder? Does anyone know? Isn't it just a matter of finding and depressing the pin and rotating the cyliner?