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Suspension and Chassis Questions about your suspension? Need chassis advice?

4 LINK

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Old 10-05-2018, 07:02 AM
  #1  
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4 LINK

I have an 89 Formula with a 9 bolt rear. I also have a 9" Ford rear, complete with disc brakes that is 5" more narrow than the 9 bolt. I want to drag race the car and I am considering a 4 link conversion to the 9" Ford. Has anyone converted to a 4 link rear suspension? My other option is to cut and weld 3rd gen axle brackets to the 9" so it will bolt in. I have 600HP NA right now, but will be upgrading to much more HP. I have the 9" already, so I may as well use it; I'm just wondering if 4 link would be better than the torque arm set up. All thoughts are welcome, and thank you for the help.
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Old 10-09-2018, 05:31 PM
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Re: 4 LINK

If you backhalf the car and Install a proper, fully adjustble 4 link, it would be a good drag setup. However is very labor intensive and can get expensive.

A Moser 9" bolt In housing and axle kit is about a grand, just add your center and whatever brakes you order it for.

Depends what you want to spend
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Old 10-12-2018, 08:55 AM
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Re: 4 LINK

I would like to have the 4 link, but you are right, it is a lot of work. I'm leaning toward modifying my Ford 9", and using Spohn coil overs. I can get a lot done with $1000.
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Old 10-12-2018, 11:41 AM
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Re: 4 LINK

Look into a Fays2 system. Good alternative without major modification.
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Old 10-15-2018, 06:08 AM
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Re: 4 LINK

Thanks for the reference. the Fays2 system looks heavy duty and good for road racing.
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