I have a couple dozen Camaro springs, which I would like to sell if only I knew enough to properly describe them. Can someone help me? These are new or nearly new springs left over from Tommy Morrison's Mobil 1 Camaro racing program of the late '80s.
Here's what's on the tags, plus thickness and number of coils.
fronts
Six BXW (14029393) 17mm/8 coils
One BXW (14029392) 17mm/8 coils
Five BZW (14029398) 17mm/6 coils
Three BXR (14029389) 16mm/7 coils
Two BZW (14029397) 17mm/7 coils
Three BXX (14029394) 17mm/6 coils
One BXU (14029392) 17mm/7 coils
Two No ID 18mm/10 coils
rears
Four FLE (22077295) 15mm/9 coils

 

I was over at the shop with a old suspension guy in Atlanta this week and handed him the springs out of my IROC. He used to build cars for Mark Donahue so he knows what he's doing.

He took out a digital caliper and did a bunch of measurements including the following:
Front Wire Diameter .681
Rear Wire Diameter .481
Free Front Length 13 and 13/16
Free Rear Length 14 and 3/16
Turns Total on Front: 6.5 Turns
Turns Total or Rear: 7.0 Turns
Pitch Diameter Front 4.75 (coil to coil)
Pitch Diameter Rear 4 and 13/16 (coil to coil)

Then he plugged all these numbers into his HP calculator and let some program run,
he looked up at me and said "Your Front Springs are 613 Pounds and your Rear Springs are 143 pounds. Which sounds about right. 600lb and 150 was a stock IROC

Now, why do I share this story? Because there IS some math that can be done, with some measurements to calculate what each of these springs are. Now, I CANNOT do that, but I was pretty impressed that somebody could.

Good Luck on your Project!

Brian

For his final trick he Found the Compressed Length, the compressed length while on the car and calculated that my car weighed to within 100 pounds.

yeah, i'm NOT kdding. amazing.

 

[quote=BrianChevy;5122951]I was over at the shop with a old suspension guy in Atlanta this week and handed him the springs out of my IROC. He used to build cars for Mark Donahue so he knows what he's doing.

He took out a digital caliper and did a bunch of measurements including the following:
Front Wire Diameter .681
Rear Wire Diameter .481
Free Front Length 13 and 13/16
Free Rear Length 14 and 3/16
Turns Total on Front: 6.5 Turns
Turns Total or Rear: 7.0 Turns
Pitch Diameter Front 4.75 (coil to coil)
Pitch Diameter Rear 4 and 13/16 (coil to coil)

Then he plugged all these numbers into his HP calculator and let some program run,
he looked up at me and said "Your Front Springs are 613 Pounds and your Rear Springs are 143 pounds. Which sounds about right. 600lb and 150 was a stock IROC

Now, why do I share this story? Because there IS some math that can be done, with some measurements to calculate what each of these springs are. Now, I CANNOT do that, but I was pretty impressed that somebody could.

Good Luck on your Project!

Brian

For his final trick he Found the Compressed Length, the compressed length while on the car and calculated that my car weighed to within 100 pounds.

yeah, i'm NOT kdding. amazing.[/quote

Thanks. I'd heard wire thickness and number of turns were part of an equation that gave you a rate. There's got to be a book on this someplace. You'd think the codes or those numbers on the tags would also be easy to track. But I haven't found anything yet.

 

[quote=Indianavette;5123124]BTW, tell your friend in Atlanta you just heard from an old Chevy fella who's good friends with Gib Hufstadder, another one of the Mark Donahoe alumni.

 

This might help a little.

https://www.thirdgen.org/forums/susp...g-swaybar.html