Help with GM part numbers from '65 AIM

[Gary B.]

Can someone with a '65 AIM confirm two part numbers for me? I'm interested in bumper mounting hardware on UPC 14, sheet A2, specifically the lock washer and plain washer, which should be item 2 and item 3, respectively. I believe they GM parts numbers are:


120383 Lock Washer
120395 Plain Washer

But can someone with a '65 AIM confirm those for me?

Thanks,

Gary

[Joe L.]

Re: Help with GM part numbers from '65 AIM

Can someone with a '65 AIM confirm two part numbers for me? I'm interested in bumper mounting hardware on UPC 14, sheet A2, specifically the lock washer and plain washer, which should be item 2 and item 3, respectively. I believe they GM parts numbers are:


120383 Lock Washer
120395 Plain Washer

But can someone with a '65 AIM confirm those for me?

Thanks,

Gary

Gary------


Those were the part numbers shown on the original sheet. However, the 120383 was replaced at some (illegible) time in 1964 by GM #103322. Then, the latter was replaced on 3/4/64 (revision date not when it changed on the assembly line) by GM #103328.

[Gary B.]

Re: Help with GM part numbers from '65 AIM

Gary------


Those were the part numbers shown on the original sheet. However, the 120383 was replaced at some (illegible) time in 1964 by GM #103322. Then, the latter was replaced on 3/4/64 (revision date not when it changed on the assembly line) by GM #103328.

Joe,

So baring GM having a huge inventory of the 103322 lock washer to use up, it's probably reasonable to assume that the 103328 lock washer was used at the start of the '65 model year, since the change to the AIM was made in early March of '64.

Gary

[Joe L.]

Re: Help with GM part numbers from '65 AIM

Joe,

So baring GM having a huge inventory of the 103322 lock washer to use up, it's probably reasonable to assume that the 103328 lock washer was used at the start of the '65 model year, since the change to the AIM was made in early March of '64.

Gary

Gary------


I doubt there was any inventory that needed to be used up. I don't think that they were discontinued at the time that they were replaced in the PRODUCTION application. It was simply a change from one standard part to another for some unknown reason.

[Gary B.]

Re: Help with GM part numbers from '65 AIM

Joe,

Based on the 3/4/64 revision date would that also mean that the lock washer used would have been 103328 for the last ~5 months of the '64 model year?

Gary

[Joe L.]

Re: Help with GM part numbers from '65 AIM

Joe,

Based on the 3/4/64 revision date would that also mean that the lock washer used would have been 103328 for the last ~5 months of the '64 model year?

Gary

Gary-----


I wonder if the 3/4/64 date was not supposed to be 3/4/65.

[Gary B.]

Re: Help with GM part numbers from '65 AIM

Joe,

I guess I need to find someone with a '64 AIM to see what that says. If that has the 3/4/64 date then we know the answer.

Anyone with a '64 AIM out there who could check?

Gary

[David L.]

Re: Help with GM part numbers from '65 AIM

Sect. 14, sheet A2.00 & sheet B1.00 of the 1964 AIM lists GM # 120383 (L Washer) and GM # 120395 (P Washer). The only revision was on 3-11-64 where Bolt # 122293 was replaced with Bolt # 122267.

UPC 14, sheet A2 of the 1965 AIM lists GM # 103328 (L Washer) and GM # 120395 (P Washer).
Revision Boxes sheet A2 & B1:
120383 washer to 103322 on 6-23-64 to 103328 on 3-4-65

120383 is listed as a 7/16" (Med.) lockwasher in my parts catalogs.
120395 is listed as a 15/32" X 59/64" X 5/64" flat washer.

Dave

[Gary B.]

Re: Help with GM part numbers from '65 AIM

120383 washer to 103322 on 6-23-64 to 103328 on 3-4-65

Dave,

That revision date of 3-4-65 is the key. Joe listed another source with a revision date of 3-4-64, which doesn't make sense since the '64 AIM does not reference any such revision, so the '64 date must be an error. The revision date of 3-4-65 is the only one that makes sense to me.

Gary

[Gary B.]

Re: Help with GM part numbers from '65 AIM

David,

Do you have any idea why the revision to 103322 on 6-23-64 doesn't also appear as a revision in the '64 AIM?

Gary

[Joe L.]

Re: Help with GM part numbers from '65 AIM

Dave,

That revision date of 3-4-65 is the key. Joe listed another source with a revision date of 3-4-64, which doesn't make sense since the '64 AIM does not reference any such revision, so the '64 date must be an error. The revision date of 3-4-65 is the only one that makes sense to me.

Gary

Gary------


I was incorrect. The revision date in the 1965 AIM is 3-4-65 just as Dave reported. I don't know how I came up with 64. Maybe I was sleepy when I read it.

[David L.]

Re: Help with GM part numbers from '65 AIM

David,

Do you have any idea why the revision to 103322 on 6-23-64 doesn't also appear as a revision in the '64 AIM?

Gary

Gary,

June 23, 1964, was late in the 1964 production. By the time the revision would actually be implemented on the assembly line the 1964 production would have probably ended.
I have seen this same situation in the 1970 and 1971 Camaro AIM's where the revision was in the 1971 Camaro AIM but the revision date was actually during the 1970 Camaro production.

Dave

[Gary B.]

Re: Help with GM part numbers from '65 AIM

Gary,

June 23, 1964, was late in the 1964 production. By the time the revision would actually be implemented on the assembly line the 1964 production would have probably ended.
I have seen this same situation in the 1970 and 1971 Camaro AIM's where the revision was in the 1971 Camaro AIM but the revision date was actually during the 1970 Camaro production.

Dave

Dave,

Interesting about the Camaro AIMs. It suggests some lumbering bureaucratic committee that makes a revision decision, but can't get it documented in the production manuals for months. Stranger things have happened, I'm sure.

Gary

[David L.]

Re: Help with GM part numbers from '65 AIM

Dave,

Interesting about the Camaro AIMs. It suggests some lumbering bureaucratic committee that makes a revision decision, but can't get it documented in the production manuals for months. Stranger things have happened, I'm sure.

Gary

Gary,

UPC U63, sheet 12L-1 of the 1971 Camaro AIM shows a revision dated 4-11-70 changing the 7313511 speaker to the 7933921 speaker. The 1970 Camaro AIM only shows the 7313511 speaker (UPC U63, sheet A2) without any speaker part number revision. The last week of production for the 1970 Camaro was the 1st week of August 1970. The time difference is almost 4 months.
The 1971 Camaro AIM used a different sheet number format.

Dave

[John H.]

Re: Help with GM part numbers from '65 AIM

Dave,

Interesting about the Camaro AIMs. It suggests some lumbering bureaucratic committee that makes a revision decision, but can't get it documented in the production manuals for months. Stranger things have happened, I'm sure.

Gary

Gary -

You might find this article useful - it describes the Assembly Manual, how to use it, who used it, and a section near the end describes how running changes were handled.

http://www.camaros.org/AIM.shtml