Quote:
Originally Posted by bsmith0404
I’m assuming you meant the hitch in the truck is as high as it will go or the king pin is as low as it will go to provide rail clearance.
The best way to lift anything is with the springs. I don’t know if you can find any company that provides an arched spring that would provide more lift and I don’t know how that would work with the double axle design since it would change all the geometry. Works great with a single axle, but a spring with more arch will be longer when it flattens out and probably wouldn’t work well with rv suspension.
That basically leaves you with adding block between the springs and axles with longer u bolts. I’m assuming the springs are already above the axles. If the springs are below the axles, you can flip that and put the springs above the axles, that will add about 4” of lift. Just be careful when lifting an RV, just like anything else, it makes them more too heavy. Also, check the height before lifting so you know how far you can go and still be under 13’6”
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Had to lift our Cougar since there was less than 1" clearance top of tires to base of floors.
Dealer put in 2" square blocks over the axles & longer U bolts. Now we don't rip the covering. We also installed sheet aluminum to stop wear & retain waterproofing.
Been good for 2+ years.
CR3000 pivots replaced the factory shackles giving almost another inch.
No marks on the aluminum now.
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