Suspension Question
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Senior User
Joined: Jun 2006
Posts: 198
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From: Vacaville, Ca
Suspension Question
Hey all heres what I did, I had a 1970 28 ft weekender Motorhome on a F350 camper special Chassie, I swapped the rearend including springs over to my 1967 F250 Camper Special then I swapped the I beams with springs over to the 67, I like the 6in extra lift but my front tires are now making a major V sign, the springs from the 70 are about 4 inches longer and a 1/3 bigger in diameter , does anyone make brackets to extend the pivot end of the I beams down or is my only option to cut the coil springs down some, I've measured the brackets and the distances are pretty much equal between mounts and spring perches, Both vehicle's have 390FE the 67 has a C4 Trans the 70 has C6 that I'm changing over next, any suggestions,,,, thanks
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Senior User
Joined: Jun 2006
Posts: 198
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From: Vacaville, Ca
More info, was out this morning looking things over again, found that the coil spring tower from the 70 sits 3.5 in higher above the frame than the 67 also the coil springs from the 67 uncompressed are the same length as the 70 springs on the truck now with full weight on them so should I just cut a few coils off the 70 springs or change out the coil towers which will be a much more involved job, I know I can't keep the lift but I sure like the way it looks
Elder User
Joined: Jun 2009
Posts: 560
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From: 92592
Making the motorhome springs shorter is not going to solve your problem, they will still be too stiff. Think about the spring un-coiled into a straight piece, a shorter piece (less turns in the coil) of spring steel will be harder to bend than a longer one (more turns in the coil) if the diameter and properties are equal. Its kind of counter-intuitive.
So you are saying that the length of the spring you now need is longer than what you had?
So you are saying that the length of the spring you now need is longer than what you had?
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Senior User
Joined: Jun 2006
Posts: 198
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From: Vacaville, Ca
the springs I have in there now from the motorhome are about 5in longer than the stock 67 springs, the steel used is also a good 1/3 larger in diameter than the 67 also the actual coil loops are just slightly larger
