What's the difference between the 850 & 8606 springs? Is it variable with one side being tapered to be installed in one direction only?
The awd spring free height is over 13 inches, install height around 10 inches and coil diameter is just under 3.5 inches, the installed height of the 850 spring is too short on the awd van. I'm going to try the 6082 spring, it is a full size 70s blazer spring. $60 a pair. If they don't fit as is, I will heat them up and reshape the ends.
Part # coil dia. wire dia. rate/in load install height free height
CC850 4.07 0.75 605 1825 8.75 11.65
6082 3.68 0.75 722 2406 10 13.18
8606 3.5 0.656 462 1900 11 15.13
stock 3.4375 0.735 660 ???? 10.? 13.25
The 8606 is not an exact fit, looking at pictures of other people that have installed that spring, it is too tall and soft. It will restore ride height but the wire is not as thick as the factory spring. Not much info out there on the awd spring, most of what I found is in threads started by robert (Icuff4cash). I will document everything I find to help the next person.