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-   -   Front Spring Rates (http://www.clubcobra.com/forums/contemporary-classic-forums/100441-front-spring-rates.html)

FatBoy 10-23-2009 02:13 PM
Front Spring Rates
 
What are the recommended front coil-over spring rates for a Contemporary with an aluminium 427?

Thank you.
Paul

1985 CCX 10-23-2009 04:17 PM
Paul

Depends upon the use.
Typical driving with a height adjustable unit should be 250lb to 275lb rate. For hard racing maybe more with 300max. Keep in mind an ally FE is probably comparable to SB cast so the 275 should suffice for all occasions.

I prefer lower rate as the bite is better, personal preference....:)

FatBoy 10-23-2009 10:35 PM
Thanks Jeff,
what about the rears, what should they be?
Can you also tell me what length they should all be please? The shockers have adjustable spring platforms.
BTW, the car will only be used on the roads.

Paul

1985 CCX 10-24-2009 04:58 PM
Paul

Keep in mind this is a 2300lb car!

Original Jaguar (4000lb car) rate is 250lb each at 10" length, I think on adjustable style they are 9". That however depends upon the shock being used. I used 250lb rate with great success and the squat was perfect. Removes the CCX perky butox as well. Stance was nice but hard cornering and a bump may cause a rub which is not unusual for these cars with the larger tires. Most of the time it was never an issue.

ERA and CCX recomend 350lb rates but for me that was too stiff. 250lb was perfect, remember that is with two per side unlike your new KMS! Good luck!:)

http://www.clubcobra.com/photopost/d...m/HPIM0472.JPG

FatBoy 10-25-2009 08:42 AM
Thanks again Jeff,
So can I just confirm, 275lb springs on the front and 250lb springs on the rear?

While we're on suspension, do you have any recommended alignment settings?

BTW, your car looks great. :3DSMILE:

Best regards,
Paul

FatBoy 10-26-2009 07:24 AM
Hi Jeff,

I've just read elsewhere that you've sold your car. :eek:

Get a Kirkham 289, you know you want to. ;) :3DSMILE:

Paul

patrickt 10-26-2009 08:01 AM
Quote:
Originally Posted by FatBoy (Post 995947)
Hi Jeff,

I've just read elsewhere that you've sold your car. :eek:

Get a Kirkham 289, you know you want to. ;) :3DSMILE:
He wants an ERA. He says he wants quality plus a detailed manual.;)

FatBoy 10-26-2009 09:28 AM
:lol: :lol: :lol:


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