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Re: Coil spring rear suspension?
The reason why triangulated 4 links dont work too well on c10's is for the sheer fact that the frames are super narrow, not allowing you have the min of 35* of angle on the upper bars to eliminate most lateral movement, if not all. That is why the vast majority of guys with fullsizes, run parallel 4 links. With that you need a panhard. The kits out there make the panhards pretty short and in any kind of leverage setup (be it true canti, bag on upper bars in a parallel, lift bars for a 6 link setup) is the panhard pulls the rear end to 1 side, some more so then others, it depends how long you make your panhard bar.
The 'trailing arm' conversion, which isnt really a ladder bar setup, as ladder bars have both upper and lower mounting points that join into the same link later on. trailing arms like on the old trucks work fine for a non-adjustable setup. When you start bagging them, in stock locations, you might not see much of a problem, not sure as to not many ppl i know, want to go from a 1:1 over axle to like a 1.2:1 b/c the bar isnt far up on the bar in a trailing arm setup. But when you start moving the bag, you run into severe pinion problems, in a 2:1 you can easily have a change of 8-12 degrees throughout the motion.
If you are staying coil as your title suggest, then a trailing arm will work fine for you, if you plan to bag, there are far better options out there.
Good luck with the truck.
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