BioMax's 4-link Article

---------------------------------------------Originally posted by BioMaxThe general idea is to have the bars near parallel to the ground a half travel. Wether it be one or the other, it would only be a few inches off at worst. You can screw up pretty bad and still have a driveable vehicle when you are done, so just try to get it as close as you can. In a situation where the upper bars are shorter than the lowers, I set up the uppers to be parallel to the ground at half travel and then point the lower bars up a bit to get my i.c. This will eliminate as much of the pinion change as you can. On a triangulated system, you would not calculate the angle of the bars into the bar length. Instant center is calculated from a side view only and from that view, you can not see the triangulation. So with theoretical equal length bars where the uppers are triangulated, the uppers will be longer.---------------------------------------------Ok Max, I see what you meant by "you've never read my 4 link article". I guess I got all caught up with trying to decipher all this info. Thanks

Very informative info here! I've got a 1990gmc s15 extcab thats still has 100%stock suspension under it. I,am looking for some local help of someone that has done a few safe tri-4links to leand a hand (im in indianapolis 46224) 10mins away from the indpls 500 motor speedway. I've got four new dom 2500bags,air management,tank,viair 380comp,all fittings,air lines,eai switchbox. I, plan to drive the truck all over indiana and outa state shows. All four corners (so to speak) will have new shocks for the right application,swapping out upper n lower arms as well with 2"drop spindles. Dont want to keep the stock gas tank,fuel cell swap is a sure thing.

Love all the info. keep it coming!