Looking to fix my 72. Need all six lock cylinders. C keyway for ign, doors. D for decklid, console, glove box. Thanks.

 

What exactly is the issue? Is it mismatched key cuts or...?

 

Yes, I have door cylinders that match the trunk, and they are all the wrong generation.

 

Oh, that's not good. I thought it may just needed tumbler work to match the ignition/doors or something like that.

 

By chance do u have the part numbers?

 

I can dig.

 

I have these two and believe they might fit your ignition? Both say "C" on key it self and are NOS. Pm if interested.

C key ignitions

 

Excellent. I might well be interested in both if both for sale. I will crosscheck part number.

 

Per the Nov 1972 Parts Book, the correct number for the 1972 Ignition Lock Cylinder is 7044844.

If you have the group numbers for the door and trunk locks, I can look those up as well.

Hope this helps - Rob

 

That number got superseded to the 20071252 in 1981. Still considered first design. Those types of igntion locks do not require the hold down screw like the second design 7830380 (mid-78 through 1988) on the right.

 

In the event you want the original number, it is available here:

https://oldsobsolete.com/products-pa...844/#gsc.tab=0

 

If you buy it from them check it over carefully. They sent me a broken trunk lock actuator that was used and someone put it back in the GM box and returned it.

 

I wouldn't buy it from them. I'd buy it on ebay for $40. plus tax. But I'd still hesitate if it didn't come with a key.

https://www.ebay.com/itm/355867185549

You have to watch out for the GM part numbers, though. Contrary to popular belief, the keyways DID NOT STAY THE SAME year to year on GM locks you could have bought at the parts department. So while that part number was good up through 1981 before they changed it, the keyways may have changed over the years while the part number stayed the same. For example, if they (briggs) made the cylinder in say, 1975, it would come with an "A" key slot, yet have the same part number on the box. But if made in 1976, you'd luck out and get a "C" key slot. Besides, getting an ignition cylinder without the key is sorta lame. You can still find them with "C" keys that are correct for the 72 model year.

 

Agreed. I'd rather pay $40.00 than $100+ for sure!

69HO43 - Regarding your comment above, each year had a different part number lock cylinder since each year used a different key letter. I believe this is to match the doors. Are you saying that the same part number could have multiple lettered keys so it was the luck of the draw depending on the manufacturer of the lock? If so, I find that strange because wouldn't they want to match the factory supplied key letter with whatever replacement cylinder was boxed, hence the different part numbers per year?

 

Yes, that's exactly what I'm saying. Trust me, I have found out a lot about factory locks once I started cutting my own keys and replacing tumblers to match them. Buying strictly by part number is a crapshoot. In the early days, that might have been a safer bet. But later on, especially after the parts consolidations started, it's not. It becomes a box of chocolates.

Briggs and Stratton made the locks/keys and lock parts for GM back then, and they didn't simply manufacture locks with different part numbers to match up keyways. It was whatever the keyway happened to be in production at the time they jammed them in the box, or however GMSPO had them box up the parts. If it was using a J key at that time, the J key lock went in the box. Next year, it could have been an A key, and so forth. But hey, don't take my word for it. They simply fit and functioned in the car they were intended. Nothing more, nothing less. They didn't care about matching keyways. Same with the cylinder parts that the key slid into. Some are even "unrestricted" keyways which accept any GM key. Still need the right cut code for the tumblers to operate it, but this is how they got around fixing locks in the "old" days without having to stock a million different lock cylinder parts.

 

Got it!