[THE VIKING]

I am just putting the front struts on my car and would like to know if there is a minimun lenght that the a arms have to be ? As you can see in the picture I only have 4.5 inches from the chassis rail to the balljoint on the strut. I am aware that I will need to make custom a arms.

 

[black8driver]

generaly the longer the better.
it gives less width change through the rotation be carefull on camber change on short arms..
si

 

[german8rcoupe]

I would work out the geometry needed first and then make the right sized lower arms. Modify the chassis to suit, not the other way around. There are penty of sources for Mac strut geometry on the web.