CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: jbtech on November 28, 2021, 08:09:57 PM

Title: NOS Coil Springs with Part Number without 2 Letter Code
Post by: jbtech on November 28, 2021, 08:09:57 PM

I purchased a few sets of NOS coil springs with tags but none have a 2 letter callout on the tag.

For example: The set I have here is part number 3955722

Are they correct for '69  "YP" or "YM" code or both?

Are springs with the same part number identical and the 2 letter code just to clarify application?

Thanks!

Jose

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: Gars68Tux on November 29, 2021, 05:26:20 AM

You can look it up in the AIM spring chart. Part numbers and codes are listed there.

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: ko-lek-tor on November 29, 2021, 08:35:35 AM

Quote from: Gars68Tux on November 29, 2021, 05:26:20 AM

You can look it up in the AIM spring chart. Part numbers and codes are listed there.

Not what OP is asking. He is well aware of that chart he tells me

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: Gars68Tux on November 29, 2021, 12:48:07 PM

He's asking for the code for 3955722, right ? I don't have a 69 AIM, but the codes are listed in the 68 AIM, so I assume they were in the 69 AIM as well.  That part number isn't valid for 68.

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: 69Z28-RS on November 29, 2021, 01:52:32 PM

In attempt to answer his questions:

1.  The two letter codes were for factory workers to quickly grab the correct spring for the car they were working on; not necessary for sales across the counter later.'

2.  If the Part Number is the same, then the springs SHOULD be the same as was used in production.

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: Jonesy on November 29, 2021, 03:07:01 PM

I would think the best explanation is that these are over-the-counter replacement springs and they would not have the two letter code like the assembly line production springs did.
The 2 letter code helped aid the assembly line workers select the correct springs.

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: jbtech on November 29, 2021, 04:23:20 PM

Thank you all for your replies. I'm going to rephrase my question.

GM replacement coil springs are sold by part number and do not provide a 2 letter code on the tag like assembly line springs.

Does this mean that assembly line coil springs with identical part number but different 2 letter code are also identical?

For example is 3955722 YP an identical spring to 3955722 YM?


Jose

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: jdv69z on November 29, 2021, 04:45:53 PM

Yes.

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: bcmiller on November 29, 2021, 06:04:20 PM

Spring chart reference with some explanation on part number usage.

A new System of determining the correct front and rear Springs has been used for 1969 Camaro
passenger cars. The assembly plants use a computer to determine the correct spring based on
the RPO equipment on the dealer order.
This requires a new method of determining service springs. The information required to determine
the correct spring or springs is shown on the subsequent pages.

http://www.camaros.org/images/pages/chassis/69_spring_chart.pdf

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: Gars68Tux on November 30, 2021, 02:47:24 AM

 Thanks Bryon. I count 5 different ID codes for 3955722...I had no idea! ???

Title: Re: NOS Coil Springs with Part Number without 2 Letter Code
Post by: jbtech on November 30, 2021, 01:46:08 PM

Thank you all for the answers!