Spring rate-Three letter code conversion

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Jul 17, 2004 | 11:20 PM

69427

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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.

Spring rate-Three letter code conversion

I'm looking for a chart that lists springs by both rate and three letter (broadcast code) label. I have seen one chart that lists spring rates by model and RPO code (very informative, my thanks to the author), but I need some help decoding the spare springs I have lying around the garage, and individual springs I see at swap meets.

Thanks,
Mike

Jul 17, 2004 | 11:24 PM

flyersfan1088

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From: What did the 5 fingers say to the face? SLAP!!

You might have better luck posting this in the C3 section

Jul 17, 2004 | 11:48 PM

69427

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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.

Quote:

Originally Posted by flyersfan1088

You might have better luck posting this in the C3 section

Why is that?

Jul 17, 2004 | 11:52 PM

flyersfan1088

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From: What did the 5 fingers say to the face? SLAP!!

Quote:

Originally Posted by 69427

Why is that?

Because your profile says you have a '69. C4 springs are completely different than C3's

Jul 18, 2004 | 12:07 AM

69427

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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.

Quote:

Originally Posted by flyersfan1088

Because your profile says you have a '69. C4 springs are completely different than C3's

Thank you for stating the obvious. But your point is what? Do I have to register with two different userid's to get information regarding my C3 or my C4? (I posted this request in the C4 forum to obtain info on parts I use on my C4.)

Jul 18, 2004 | 01:01 AM

flyersfan1088

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From: What did the 5 fingers say to the face? SLAP!!

Quote:

Originally Posted by 69427

I sense an attitiude. Good luck with your search.

Jul 18, 2004 | 01:27 AM

Wheelman

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From: Less Talk, More WOT | Houston TX

Perhaps this is the link you are looking for

:
C4 Suspension Data

Jul 18, 2004 | 01:46 AM

BAM92

Safety Car

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From: Houston Texas

I recently did a search on the forum on spring codes to find out what springs I had just bought. Lot of info here in the archives.

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Jul 18, 2004 | 01:59 AM

Z-07 freak

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From: Why are there squished peanut butter cups in my underware?

I've got the info you're looking for. Just let me know what the codes are on your springs, and I'll let you know for what year and suspension package they are for.

Last edited by Z-07 freak; Jul 18, 2004 at 02:01 AM.

Jul 18, 2004 | 09:45 AM

#10

frank j. moran

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Quote:

Originally Posted by Z-07 freak

I've got the info you're looking for. Just let me know what the codes are on your springs, and I'll let you know for what year and suspension package they are for.

Z-07, maybe you can help me also, I have a front NYR and a rear HMP. I cant remember what I took them off, I think 84s. Thanks for your help. Frank

Jul 18, 2004 | 10:02 AM

#11

Bluevette85

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From: Latham NY

Quote:

Originally Posted by frank j. moran

Z-07, maybe you can help me also, I have a front NYR and a rear HMP. I cant remember what I took them off, I think 84s. Thanks for your help. Frank

My stock suspension 85 used the NYR spring.

Jul 18, 2004 | 02:21 PM

#12

69427

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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.

Quote:

Originally Posted by Wheelman

Perhaps this is the link you are looking for

:
C4 Suspension Data

I appreciate your suggestion here. I looked at it, and it is the chart I mentioned earlier (by Mr, Hib Halverson I believe). It's very well organized and I appreciate his work here. I'm still looking for help with my original question. On the springs themselves there is a three letter code. I am trying to find either a conversion chart that will list the three letter (broadcast) code and the attending spring rate, or a chart that will show which broadcast code belongs to which RPO code (which would allow me to use Mr. Halvorson's chart).
Thanks again for your help.
Mike

Jul 18, 2004 | 03:04 PM

#13

Bluevette85

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From: Latham NY

The Vette parts list has the information your looking for. You'll have to go to a dealer to look at it or try ebay to see if someone is selling a cd-rom version.

Jul 18, 2004 | 06:43 PM

#14

Z-07 freak

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From: Why are there squished peanut butter cups in my underware?

Quote:

Originally Posted by frank j. moran

Z-07, maybe you can help me also, I have a front NYR and a rear HMP. I cant remember what I took them off, I think 84s. Thanks for your help. Frank

HMP front = 51.8 rate used on 85-87 base/FE1 and 87 Z-52s.
NYR rear = 39.9 rate 85-94 base.

Jul 18, 2004 | 09:59 PM

#15

Stingraynut

Burning Brakes

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From: Cairns Australia

I'm interested in finding a chart of the 3 letter part numbers too - I'm looking for soft spring from a 94-96. (to replace the hard ones, Z52, on my 88)

The Hib Halverson chart shows various combinations of coupe/conv F and Z ratings are all different, it would be good to know what the 3 letter prefix is for the soft springs which are rated 60N/mm front and 26N/mm rear.

ZO7 Freak, can you help me out too ?

S'nut

Jul 18, 2004 | 10:41 PM

#16

Z-07 freak

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From: Why are there squished peanut butter cups in my underware?

Stingraynut,

26.0 rears are code RHZ

The code for the 60.0 fronts is a little tricky. I believe it will have either code HA or JA. The 60.0 front spring is the only C4 spring I can not confirm 100%.

Jul 19, 2004 | 10:54 PM

#17

Stingraynut

Burning Brakes

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From: Cairns Australia

Thanks Z-07 freak, appreciate that. Any clues as to how I can get the front spring code ? - especially useful to me here in Australia, I don't want to arrange shipping of a spring and discover it's the same or worse than my 90N/mm

S'nut

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