Is it possible to beef up F150 rear suspention with F250 Parts? I have air shocks already, but need more, I pull a very heavy steel trailer. Thanks.

 

If the springs are the same width and length, I don't see why you couldn't swap them. You may need longer U-bolts for the thicker 3/4 ton spring pack too. Another way to go is to use an add-a-leaf below the spring pack or helper spring above the spring pack or go with air bags between the spring pack and the frame. Check out www.air-lift.com for air bags. Another option is to take the truck to a spring builder and have him build you a spring pack for your trucks loaded weight. National Spring here in SanDiego does that.

One note of caution, be sure you are not overloading your 1/2 ton truck, as springs are only one of the components that come into play when hauling a heavy trailer. Weigh your trailer and your truck and look in the Ford towing manual to find your tow rating and Gross Combined Weight Rating (weight limit for the total weight of truck and trailer together). These ratings will depend on what engine, transmission, and rear axle ratio you have.

 

Thanks for the help, I didn't really even think about overloading the capacity even with no modifications.

 

You didn't say what years, but we were looking at this sort of thing for my friend's 95 F150. He tows a lot of heavy stuff, and we looked for junkyard springs. What we ended up doing was putting in an add a leaf, and removing the stock lift block (its a 4x4). This set it up maybe a 1/2" a higher, and really stiffened the stock pack. Since I already had the add a leaves, it didn't cost anything, but you may look at whether this would be cheaper or junkyard packs would be. He was looking at (I think) $40 a piece in the junkyard. That's $80 total, and I don't know what an add a leaf kit costs. If yours is a 2wd, the add a leaf might not be in your best interest, since it will raise the back about 2" and make it sit really high. Hope this helps, and good luck with it. Ted

 

Thanks Ted.