#21  
Old 05-28-2020, 11:19 AM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
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Originally Posted by 3tas4me View Post
Yes, I get that, but isn’t the part number assigned by GM? It doesn’t make sense for GM to assign two different part numbers for the same part.
Today it would be for tracking costs, back then they were more worried about running out from one manufacturer. They kept track of which supplier was reliable. So yeah they are GM numbers. Another one that can be confusing is Jacks and Jack bases. Gm sourced at least 3 makers for that need, although there are differences.

  #22  
Old 05-28-2020, 03:49 PM
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Held for Ransom Held for Ransom is offline
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So, the same bolt is listed in my assembly manual under two different part numbers?
They may or may not be the same screw to start with. Each PN bolt/screw/nut/washer/clip/etc. is built to a certain criteria. Those specifications are related to head size, built-in washer?, size, grade, corrosion resistance, shear strength, etc. So, they may start out as the same, but plating makes it different. And, different platings offer different corrosion resistances.


Quote:
Originally Posted by 3tas4me
I am close to completing my project of cataloguing the bolts on an Excel spread sheet. There are a few that do not come up on the AMK page or show up on the internet. If anyone can identify these by part number and give me the specs along with a pic if you have one, that would be great! Not all of these are bolts as I am cataloguing the washers, nut clips and nuts as well.

496288 - nut retainer
3990160 - washer
6262212 - nut
9422046 - bolt
9433279 - bolt

Thank you!
1. Valance clip
2. Bumper washer
3. Bumper nut
4. Ground screw
5. Bumper filler screw

I really do think this should have been posted in the '74-6 section. But, you got your answers, so...
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  #23  
Old 05-28-2020, 04:24 PM
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1971455HO 1971455HO is offline
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Originally Posted by 3tas4me View Post
Any pic of what this looks like?
Sorry, I can't give you a pic, the one part number I found, just happened to be in my 67-76 MPC. I was just giving you the full description of the part.

Regrettably my GM 907 STANDARD STOCK catalog was printed in March 1970. Probably why I can't find the numbers you are looking for.

You could use a 907 STANDARD STOCK catalog that includes your year car. It won't give you any pics, but it will provide all the detailed information, size, length, thread, plating, etc.

Since you are putting this car back nut & bolt correct, "Concours". I recommend you buy an assembly manual for your year. It will have the correct part numbers for your car and will have, not a pic, but an illustration showing where it goes. I looked through my assembly manual trying to help you. My best guess is in the 3 year gap form mine to yours, they changed part numbers.

If someone here on the 70-73 forum has a '74 assembly manual they can probably help you, or at least verify whether your on the right track. Wished I could help more. My library is built around 70 & '71 models.

Good Luck.

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  #24  
Old 05-28-2020, 05:20 PM
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Originally Posted by 1971455HO View Post
Sorry, I can't give you a pic, the one part number I found, just happened to be in my 67-76 MPC. I was just giving you the full description of the part.

Regrettably my GM 907 STANDARD STOCK catalog was printed in March 1970. Probably why I can't find the numbers you are looking for.

You could use a 907 STANDARD STOCK catalog that includes your year car. It won't give you any pics, but it will provide all the detailed information, size, length, thread, plating, etc.

Since you are putting this car back nut & bolt correct, "Concours". I recommend you buy an assembly manual for your year. It will have the correct part numbers for your car and will have, not a pic, but an illustration showing where it goes. I looked through my assembly manual trying to help you. My best guess is in the 3 year gap form mine to yours, they changed part numbers.

If someone here on the 70-73 forum has a '74 assembly manual they can probably help you, or at least verify whether your on the right track. Wished I could help more. My library is built around 70 & '71 models.

Good Luck.
I do have the '74 assembly manual, that is where my part numbers came from. I believe a lot of these numbers are the same as '70-'73 as well. Thanks again.

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