Rear spring code/rate conversions?
Thread Starter
Tech Contributor
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Rear spring code/rate conversions?
I put a C4 suspension under my '69, and am looking to stiffen up the rear. I have a suspension info chart that was published a few years back, but it only relates the spring rates and the year/option codes. I need some sort of conversion chart that lists the three letter broadcast code and the rate, so I can use this info when shopping for springs at swap meets or web auctions.
Can anybody help me out here?
Thanks,
Mike
Can anybody help me out here?
Thanks,
Mike
Corvette Enthusiast
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From: So. Cal.
2025 C7 of the Year Finalist- Unmodified
2024 C7 of the Year Finalist - Unmodified
2023 C7 of the Year Finalist - Unmodified
Thread Starter
Tech Contributor
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Thanks for the reply, but that's the chart I already have. I need one that has the three letter spring broadcast codes, not the vehicle RPO codes. The broadcast codes are molded/stamped into the spring.
Team Owner
Joined: Sep 2003
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The "stoutest" rear spring is the '84 FE7 (BMH) so I've heard!
Here are others:
'84 w/o FE7: BMF
'85 - '88 Coupe FE7: NYU
'89 - '92 FE7: NYU w/o FX3
'89 - '90 FE7 w/FX3: NYR
'92 - ZR-1: RHY
'87 - '91 Coupe FE1: NYR
'85 - '92 Verts FE1: RCA
You should be able to use these and use the charts subbing FE7 for Z51
Here are others:
'84 w/o FE7: BMF
'85 - '88 Coupe FE7: NYU
'89 - '92 FE7: NYU w/o FX3
'89 - '90 FE7 w/FX3: NYR
'92 - ZR-1: RHY
'87 - '91 Coupe FE1: NYR
'85 - '92 Verts FE1: RCA
You should be able to use these and use the charts subbing FE7 for Z51
Last edited by WVZR-1; Jun 28, 2009 at 10:25 PM.
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
Spring rates
front 84-87
bmb 102
hmz 63.5
hkx 39.9
hmp 39.9
hm2? 57.2
hmn 54.4
front 88-96
fha 93.1
fhb 115.5
fhc 93.1
aa 96.2
fsk 90.1
fsm 75.4
fss 90.1
fsr 73.2
ha 60
ja 60
rear 84-96
bmf 72
bmh 87.5
nyu 57.2
nyr 39.9
rca 39.9
rhy 39.9
rhz 39.9
rr 26
front 84-87
bmb 102
hmz 63.5
hkx 39.9
hmp 39.9
hm2? 57.2
hmn 54.4
front 88-96
fha 93.1
fhb 115.5
fhc 93.1
aa 96.2
fsk 90.1
fsm 75.4
fss 90.1
fsr 73.2
ha 60
ja 60
rear 84-96
bmf 72
bmh 87.5
nyu 57.2
nyr 39.9
rca 39.9
rhy 39.9
rhz 39.9
rr 26
Thread Starter
Tech Contributor
Joined: Jun 2004
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
