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Author Topic:   Coil Spring Rate?
fairlaniac
Journeyman

Posts: 43
From: Denver, PA USA
Registered: Mar 2001

posted 04-17-2003 10:01 PM     Click Here to See the Profile for fairlaniac   Click Here to Email fairlaniac     Edit/Delete Message   Reply w/Quote
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

posted 04-17-2003 10:18 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
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

posted 04-17-2003 10:23 PM     Click Here to See the Profile for fairlaniac   Click Here to Email fairlaniac     Edit/Delete Message   Reply w/Quote
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

posted 04-29-2003 09:43 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
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

posted 04-29-2003 09:59 PM     Click Here to See the Profile for fairlaniac   Click Here to Email fairlaniac     Edit/Delete Message   Reply w/Quote
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

posted 04-30-2003 09:45 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
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

posted 05-01-2003 12:26 PM     Click Here to See the Profile for Hemikiller   Click Here to Email Hemikiller     Edit/Delete Message   Reply w/Quote
hmm, lessee here

69, 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

posted 05-02-2003 10:21 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
Wouldn't the AC springs have a more variable rate,to carry the extra load ?

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