Help with stamp codes for rear springs

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Mar 7, 2006 | 06:00 PM

willi.anton

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Instructor

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From: San Bernardino & Orange County CA

Help with stamp codes for rear springs

Can you fill in the "stamped codes" for these rear springs? Thanks.

330 lb/in (Z51/Z07) -85, 86, 87, 88, 89, 90, 91, 92, 93
233 lb/in (Base) -85, 86, 87, 88, 89, 90, 91, 92, 93
149 lb/in (FX3) -94
188 lb/in (ZR-1) -94
228 lb/in (Base) -94
327 lb/in (FE7) -94
149 lb/in (FX3) -95
188 lb/in (ZR-1) -95
228 lb/in (Base) -95
327 lb/in (FE7) -95
149 lb/in (Coupe/F45) -96
228 lb/in (Vertte) -96
327 lb/in (FE7) -96

Mar 7, 2006 | 06:43 PM

CFI-EFI

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From: The Top of Utah

Quote:

Originally Posted by willi.anton

Can you fill in the "stamped codes" for these rear springs? Thanks.

330 lb/in (Z51/Z07) -85, 86, 87, 88, 89, 90, 91, 92, 93 NYU
233 lb/in (Base) -85, 86, 87, 88, 89, 90, 91, 92, 93 NYR
149 lb/in (FX3) -94
188 lb/in (ZR-1) -94
228 lb/in (Base) -94
327 lb/in (FE7) -94
149 lb/in (FX3) -95
188 lb/in (ZR-1) -95
228 lb/in (Base) -95
327 lb/in (FE7) -95
149 lb/in (Coupe/F45) -96
228 lb/in (Vertte) -96
327 lb/in (FE7) -96

My parts book doesn't show the spring rates and only goes to 1990. The two codes I could add are for up to 1990 and based on the applications given.

RACE ON!!!

Mar 7, 2006 | 07:13 PM

Z-07 freak

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

Ancient Chinese secret.

Mar 7, 2006 | 10:22 PM

CentralCoaster

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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed

1985 Z51 rear = Nyu

Mar 7, 2006 | 10:25 PM

CentralCoaster

Team Owner

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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed

How come you don't have 84 on your list?

Mar 8, 2006 | 11:16 AM

willi.anton

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Instructor

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From: San Bernardino & Orange County CA

CentralCoaster the chart is great for relative comparisons. Do you have cross references that list the codes with respective lbs/in specs?

Mar 8, 2006 | 02:03 PM

CentralCoaster

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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed

No sir, but if/when you find the code info, feel free to add that to my chart.

Mar 8, 2006 | 02:14 PM

Vetracr

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From: Boynton Beach, FL

Be careful when comparing just spring rates. What matters is wheel rate, the effective spring rate at the wheel. The 84-87 front suspension is quite a bit different from the 88-96 front suspension. Due to the difference in "motion ratios", a spring for an earlier car has a higher wheel rate than the same spring on a later car. FWIW.