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05-24-2009, 01:24 PM
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#1 |
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Registered User
Join Date: Apr 2009
Location: Easton Kansas
Posts: 25
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Coilover HELP!!!!
I want to run coilovers all the way around on my 73 swb. My problem is I don't know what spring rates to use. Can anyone on here help me with the information on this?
My fingers hurt from googleing!!!! lol Thanks for your help!!!! |
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05-24-2009, 04:24 PM
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#2 |
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Registered User
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,939
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Re: Coilover HELP!!!!
good luck I am sure you have done the searching on here too. It has been asked but nobody knows? look around a bit I have a couple posts but not much info. I have 650 lb/inch springs I am going to use (or try) and see if that is stiff enough.
Dave
__________________
Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!" |
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05-24-2009, 04:57 PM
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#3 |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Coilover HELP!!!!
It's based on the weight of your vehicle and the leverage (where you place the springs and the length of the arms). I think QA1 has a good diagram in one of their catalogs.
Have you tried contacting QA1 or company you are going to buy the coilovers from?
__________________
83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo=  Douchebag Racing: Runs Fine all the Time |
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05-24-2009, 09:45 PM
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#4 |
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Registered User
Join Date: Apr 2009
Location: Easton Kansas
Posts: 25
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Re: Coilover HELP!!!!
Thanks for the replies guys! I am going to do some more research and make some calls. I will let you all know what i find out.
Thanks, |
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05-25-2009, 04:54 AM
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#5 |
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>130dB Moderator
Join Date: Aug 2006
Location: Sacramento, CA
Posts: 2,130
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Re: Coilover HELP!!!!
On my front suspension, I'll be running anywhere form 600-700 lbs.
__________________
Living Life @ 130dB LED Tail Light Conversion; How-to Friend. Father. Brother. RIP El Jay ------------------------------------------------------------------------------------------------------------------------- CLICK HERE and for less than $0.07 a day, you too can help support and build a better forum. |
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05-25-2009, 07:25 AM
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#6 | |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Coilover HELP!!!!
Quote:
__________________
83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= Douchebag Racing: Runs Fine all the Time |
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05-26-2009, 01:45 PM
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#7 | |
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>130dB Moderator
Join Date: Aug 2006
Location: Sacramento, CA
Posts: 2,130
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Re: Coilover HELP!!!!
Quote:
__________________
Living Life @ 130dB LED Tail Light Conversion; How-to Friend. Father. Brother. RIP El Jay ------------------------------------------------------------------------------------------------------------------------- CLICK HERE and for less than $0.07 a day, you too can help support and build a better forum. |
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05-25-2009, 08:02 AM
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#8 |
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Registered User
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,939
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Re: Coilover HELP!!!!
I have been doing some figuring and am not sure but think with the lever ratio between the spindle and the coil location the load on the coil will be twice that at the tire (weight) so for easy numbers in my case if my front truck weight is 2600 lbs then each tire is holding 1300 lbs so the coil would see 2600 pounds static so my 650 lb/inch springs will compress 4 inches. Now somebody chime in to make sure my thought process is correct? That really seems like a lot.
so yes I am looking for input too before I start cutting. Now this sounds ok from this side but I am not sure what to expect from the dynamic inputs. Now I did follow the advice by wild 83c10 and found this. http://www.qa1.net/qa1_motorsports/i...etrod_tech.pdf it is a PDF so it has to load but page 2 has a chart that helps on what they think. Yes I agree it does depend on your lever and the angle of the shocks so it may be somewhat of a trial and error thing. I hope to start sometime... Dave
__________________
Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!" |
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05-25-2009, 09:57 PM
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#9 |
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Registered User
Join Date: Aug 2002
Location: Kent, Wash
Posts: 53
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Re: Coilover HELP!!!!
I've got coils in the rear and am running 200 on the right side and 180's on the left, it turns left alot.
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05-26-2009, 05:56 PM
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#10 |
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Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: Coilover HELP!!!!
Seems like you guys have at least done some good initial research. I agree that it will be some trial and error.
The reason I asked was to make sure the info you passed along to bowat6969 was somewhat reliable.
__________________
83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= Douchebag Racing: Runs Fine all the Time |
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05-27-2009, 06:06 AM
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#11 |
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Registered User
Join Date: Jan 2006
Location: Cherry Valley,Ca
Posts: 468
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Re: Coilover HELP!!!!
I first figured about 650 lb but when i installed them but when I lowered it down it went onto the stoppers. I ended up putting 800# 8" springs in 7" shocks. Had to source the springs from Eibach as the they have a simply awesome selection of springs. I have a lever ratio of about 2:1 and a big Block Olds engine(lighter than a BBC but heavier than SBC).
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