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Author
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Topic: Coil Spring Rate?
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fairlaniac
Journeyman Posts: 43
From: Denver, PA USA
Registered: Mar 2001
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posted 04-17-2003 10:01 PM
   
Anyone know the stock coil rates for 66-69 Fairlanes? Small block and big block rate?Thanks, ------------------
Doug ( Fairlaniac )
1966 Fairlane
http://www.geocities.com/fairlaniac
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MLariviere
Moderator Posts: 4065
From: Biddeford,Me.USA
Registered: May 99
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posted 04-17-2003 10:18 PM
I'll see what i can dig up in my facts books.
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fairlaniac
Journeyman Posts: 43
From: Denver, PA USA
Registered: Mar 2001
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posted 04-17-2003 10:23 PM
Thanks! I have a set of new springs but cannot remember which they were. I know how to calculate spring rates but am not sure if these are for the SBF or BBF (FE).------------------
Doug ( Fairlaniac )
1966 Fairlane
http://www.geocities.com/fairlaniac
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MLariviere
Moderator Posts: 4065
From: Biddeford,Me.USA
Registered: May 99
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posted 04-29-2003 09:43 PM
Sorry,Doug,but my books don't go that deep.  I'm going through the same thing with my car. The parts stores have listings,but no spring rates. I just chose the ones from a Sport model,with a 351/AC,which is the same as a 400. In the back,I found some variable rate springs. The spring company said they will help when loaded,the car won't squat.
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fairlaniac
Journeyman Posts: 43
From: Denver, PA USA
Registered: Mar 2001
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posted 04-29-2003 09:59 PM
Thanks for the effort.------------------
Doug ( Fairlaniac )
1966 Fairlane
http://www.geocities.com/fairlaniac
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MLariviere
Moderator Posts: 4065
From: Biddeford,Me.USA
Registered: May 99
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posted 04-30-2003 09:45 PM
The way the spring catalog looked,most cars only had a few selections. They mostly cover engine displacement,and with or w/o AC.
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Hemikiller
Gearhead Posts: 661
From: Killingworth, CT
Registered: Feb 2002
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posted 05-01-2003 12:26 PM
hmm, lessee here69, 390, 2dr hdtp, no a/c, 345lb rate
69, 302, 2dr hdtp, no a/c, 295lb rate There are quite a few different springs for these years. A/C springs are always softer, but taller to carry the extra weight. When switching to heavier springs, you have to watch the load height. It takes "X" amount of weight to compress a spring to it's correct ride height, and a higher rate spring has to be shorter to achieve this. Also, the spring rate info is in the BACK of the catalog....
[This message has been edited by Hemikiller (edited 05-01-2003).]
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MLariviere
Moderator Posts: 4065
From: Biddeford,Me.USA
Registered: May 99
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posted 05-02-2003 10:21 PM
Wouldn't the AC springs have a more variable rate,to carry the extra load ?
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