[Alex V.]

When I changed the springs on my '85 C3500 I upped to a 3,900 lb.-rate spring (assuming what came out was the standard 3,500#) and stock application Monroe Magnum shocks are nearly fully extended. There's no way to tell how far the old springs had sagged, but it sits a good 3"+ higher now. Ride isn't a lot stiffer, but neither the 3,500 or 3,900 pounders are any semblance of smooth until there's 2,200 lbs. of the truck + at least 500 lbs. of cargo sitting on them. If you're concerned about ride comfort at all, stick with the 2,600 pounders. If it was a 3/4 ton small block truck I'd have probably opted to stay lighter when I replaced the springs, but with a 454 and FF 14-bolt axle I didn't want the truck dragging the ground before I even tested the drivetrain's ability.