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-   -   Factory Five IRS axles? (http://www.clubcobra.com/forums/factory-five-racing/62218-factory-five-irs-axles.html)

Ant 03-06-2005 12:26 AM
Factory Five IRS axles?
 
I would appreciate information on the length of the half shafts used with CV joints in the Thunderbird IRS setup?

I phoned a reputable axle manufacturer he told me they were 15" long, me thinks thats is not correct, but if they were more like 11" - 12" then I could use them!

John A. Simpson 03-06-2005 10:17 AM
Did you try checking at the FFR forums, I'll bet someone there like Larry N Johnson would have the info you need.

FFCobra

Ant 03-06-2005 10:31 AM
FFR Axles
 
Thanks John will do!

grumpy 03-06-2005 11:19 AM
Ant,
The Factory Five pin drive rear IRS T-Bird/Cougar 8.8" axles are 15", but are that length for the reason of the FFR rear suspension design. The pivot point of the CV joints relative to your rear arm/hub pick up suspension points and shocks are critical to the life and action of the joint.
Personal eMail to continue discussion.
grumpy

enyawix 09-29-2007 07:10 PM
If I buy the IRS axles would it hurt my 1/8th and 1/4th mile times?

carbon777 10-22-2007 11:19 AM
The answer is .....It mostly has to do with your set-up.

Get adjustable shocks and a few set's of springs.

There are many Mustang Cobras with IRS running low 10's ..... in a 3800 lb cars too.


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