My truck is lower then stock, but not lowered on propose. I would say 90% of my ride issue is just me. I like the smooth, softer ride verse the stock truck like ride. I studied on springs for a while trying to understand them better, the GM site with all the truck packets helped a bunch. 1937 1/2 trucks were over sprung, meaning they had very heavy springs for carrying a lot more weight then they should have been. In '39, GM the cut the spring rate down a lot, yet the trucks weighed about the same and carried the same GVW. Once the trucks began to grow in size and weight, the spring rates stayed pretty constant.
My truck was even worse due to the lighter engine out over the axle. As far as the ride hight, it came down from the softer springs and the arch the spring shop put into them. I could of had them raise it, but it seems to be more steady down a little lower.
1937 1/2 ton, Gross Allowable Weight #4400, 710 - 790 lbs at rest on front springs, 475 lbs deflection rate
1939 1/2 ton, Gross Allowable Weight #4400, 775 lbs at rest on front springs, 260 lbs deflection rate
1946 1/2 ton, Gross Allowable Weight #4400, 775 lbs at rest on front springs, 260 lbs deflection rate
1953 1/2 ton, 810 - 890 lbs at rest on front springs, 310 lbs deflection rate
As you can see the '37 was heavy sprung, the deflection rate is # of pounds it takes to compress the spring 1". So for every 475 lbs, the spring is compressed 1", yet the trucks all weighed about the same. I believe my springs are in the 220 range now.
I had a friend that had a set of digital race car scales. One scale under each wheel all going to a central information box. They worked really well for what I needed. Read down to the 1 lb.
