I've had the Motor Home for 2 yrs and it has had a new gear box installed, assist rear leaf spring added, Safe-T-Plus steering shock installed, and I still am having problems with it floating on the open road. It has Kingpin suspension in the front which I understand can be shimmed or I've heard of a replacement that will allow easy caster/camber adjustments. Can anyone tell me what the best caster/camber degree is to keep it on the road and yet not wear out tires to quickly, and also if there is a mod that can be added.Thanks,Jerry

Take it to a good alignment shop, explain the situation to them. They are the experts and will know what to do. Before you go, get accurate weights both front and rear axle, plus side to side. Its quite possible your light on front end weight. If thats the case, there is not much an alignment shop can do for you.

The Kingpin chassis had better handling than the ball joint setup that replaced it. We had a 1983 E350, kingpin axle, and like you, I replaced the steering box and shored up the rear springs. I did several other things. 1. Replaced the Axle-to-Frame Bushings. I've seen them really shot, ours weren't too bad but I'm sure new ones helped. I was able to press them in/out with a borrowed Ball Joint Press kit.2. Replaced the Radius-Rod-to-Frame Bushings. Easy job, and bad ones all allow the front end to toe OUT, which you don't want.3. Replaced Front Sway Bar End Link Bushings. They were OEM rubber, and softened. I installed a poly bushing kit from NAPA and the change was amazing. This was really a big hitter in the improvement lineup.4. Adjusted Toe to slightly IN. There are various DIY ways to check and change Front End Alignment, and TOE is the simplest. With some Toe IN, about 1/4" the way I measured it, the driving really became great. WAY better than the E450 in my signature, and the E450 has Sway Bars, Air Bags, Track Bar, and offset bushings to increase Caster.

Start by weighing the rig. best to get front, rear and hopefully each corner.Check air pressure level with tire manufactuer specification for your weight.

Thanks Guys for the input, especially from Sunny Florida. The weight issue I know is a little touchy because of how far the chassis extends beyond the rear axle. That being said, this rig could not have driven this way when new, and I'm the second owner, the first drove his family all over the country and put 60K on it, and he wouldn't have done that fighting it like I am.I'm going with the bushings next then, and will have a test run down to Galveston in May before going to the races in Ft. Worth in June. I've already had the toe in adjusted with 1/4" when I had the gear box replaced which has helped, but I suspect replacing all the bushings will bring it back close to new condition.

GET THE WEIGHT. Then adjust the air pressure in the tires. Stop throwing parts at it till you know the weight and pressure.

91 E-350 28' Fleetwood Floating/Hard to handle | Good Sam Community

j-d
Explorer II
Apr 19, 2017
The Kingpin chassis had better handling than the ball joint setup that replaced it. We had a 1983 E350, kingpin axle, and like you, I replaced the steering box and shored up the rear springs.

I did several other things.

1. Replaced the Axle-to-Frame Bushings. I've seen them really shot, ours weren't too bad but I'm sure new ones helped. I was able to press them in/out with a borrowed Ball Joint Press kit.

2. Replaced the Radius-Rod-to-Frame Bushings. Easy job, and bad ones all allow the front end to toe OUT, which you don't want.

3. Replaced Front Sway Bar End Link Bushings. They were OEM rubber, and softened. I installed a poly bushing kit from NAPA and the change was amazing. This was really a big hitter in the improvement lineup.

4. Adjusted Toe to slightly IN. There are various DIY ways to check and change Front End Alignment, and TOE is the simplest. With some Toe IN, about 1/4" the way I measured it, the driving really became great. WAY better than the E450 in my signature, and the E450 has Sway Bars, Air Bags, Track Bar, and offset bushings to increase Caster.
donn0128
Explorer II
Apr 19, 2017
Take it to a good alignment shop, explain the situation to them. They are the experts and will know what to do. Before you go, get accurate weights both front and rear axle, plus side to side. Its quite possible your light on front end weight. If thats the case, there is not much an alignment shop can do for you.

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