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Topic: Ok without sounding like a total idiot....

in Forum: C3 Handling Components


Ok without sounding like a total idiot....

Posted: 10/7/11 12:06pm Message 1 of 6
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Pittsburgh, PA - USA
Joined: 12/4/2002
Posts: 600
Vette(s): 1979 L-82, 3 spd auto, car was originally Lt. Beige currently painted Sportsman Red, Doeskin leather interior, 103,000 miles......
What are the pound ratings on rear leaf springs and how do they relate to ride and performance....



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Re: Ok without sounding like a total idiot....

Posted: 10/7/11 4:10pm Message 2 of 6
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Holland Patent, NY - USA
Joined: 6/3/2008
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Vette(s): #1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker
Heavier the poundage stiffer the ride, tighter cornering no roll over. I'd go for ride comfort.
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Evil Smileebo

Re: Ok without sounding like a total idiot....

Posted: 10/7/11 4:48pm Message 3 of 6
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ebo said: Heavier the poundage stiffer the ride, tighter cornering no roll over. I'd go for ride comfort.
Evil Smileebo
Oh Yeah................

The mono spings are rated 300# (soft) 330# (more control) little hard 360# (great cornering) 420# ( like riding on an old stagecoach over rocky dirt roads)Wink..........(with ebo riding shotgunLOL)


corvette440hp

Re: Ok without sounding like a total idiot....

Posted: 10/7/11 5:07pm Message 4 of 6
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Wichita, KS - USA
Joined: 11/10/2003
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Vette(s): 2005 Daytona Sunset Orange Metallic Coupe --------------------- Sold 1974 T-top, 4 spd to BillKS
Ride quality is dependent on what you like. If you want a softer ride, obviously you go with a lower spring rate.

Hyperco, TRW and VBP all make good springs. Each have a different theory on how to build a spring. Hyperco uses a high arch spring with low spring rates. The Hyperco EZ Ride spring is 200#'s which is equivilant to a stock 9 leaf. The next spring rate up is a 330# spring.

TRW uses the same approach as Hyperco since they both use GM molds for their springs. TRW just doesn't go as low as the Hyperco in spring rate. I think the lowest rate is 315#'s. That is what I have on my C3 and it's a smooth ride.

VBP uses a low arch spring with a higher spring rate but you have to use the 8" spring bolts no matter what. Not that it's a bad thing.

With different spring rates also comes different shocks. KYB GR2's or Bilsteins work best. When you choose your spring rate, the company you buy them from should be able to tell you what shock will work best with that spring. The 2 different shocks have different rebound rates and the nose pressure rates and they should be matched to the spring.

Couple other things to watch for with a fiberglass spring. Keep heat off the spring. Exhaust heat can cause premature failure. Normally header wrap around the spring and/or around the exhaust will help the heat issue out.

Another thing is do not use any acidic based cleaners to clean the spring. This will and can cause the spring to split. Just use a wet rag if you have to keep it looking clean.
 
 
 


|UPDATED|10/7/2011 5:07:31 PM (AZT)|/UPDATED|



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Re: Ok without sounding like a total idiot....

Posted: 10/7/11 5:10pm Message 5 of 6
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Dejablu said: Ride quality is dependent on what you like. If you want a softer ride, obviously you go with a lower spring rate.

Hyperco, TRW and VBP all make good springs. Each have a different theory on how to build a spring. Hyperco uses a high arch spring with low spring rates. The Hyperco EZ Ride spring is 200#'s which is equivilant to a stock 9 leaf. The next spring rate up is a 330# spring.

TRW uses the same approach as Hyperco since they both use GM molds for their springs. TRW just doesn't go as low as the Hyperco in spring rate. I think the lowest rate is 315#'s. That is what I have on my C3 and it's a smooth ride.

VBP uses a low arch spring with a higher spring rate but you have to use the 8" spring bolts no matter what. Not that it's a bad thing.

With different spring rates also comes different shocks. KYB GR2's or Bilsteins work best. When you choose your spring rate, the company you buy them from should be able to tell you what shock will work best with that spring. The 2 different shocks have different rebound rates and the nose pressure rates and they should be matched to the spring.

Couple other things to watch for with a fiberglass spring. Keep heat off the spring. Exhaust heat can cause premature failure. Normally header wrap around the spring and/or around the exhaust will help the heat issue out.

Another thing is do not use any acidic based cleaners to clean the spring. This will and can cause the spring to split. Just use a wet rag if you have to keep it looking clean.
 
 
 




Wow, Larry that's is very very infomative.........thanks for posting that!




corvette440hp

Re: Ok without sounding like a total idiot....

Posted: 10/8/11 5:12am Message 6 of 6
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Sykesville, MD - USA
Joined: 4/27/2008
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Vette(s): 1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops
Only the best answers from our esteemed members on this site!
 
Barry
 
P.S. I have the TRW 330 pound springs with the Bilstein Shocks and LOVE it!
 
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in Forum: C3 Handling Components


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