? on differences between w 250 and w350 single rear wheel one ton
wondering what are all the major differances between a w 250 4x4 and a w350 4x4 single rear wheel
i assume heavier springs but what else , i am looking for a 1st gen and really dont need a 1 ton but may be interested in one,
i owned a 92 w250 bought it new then a 94 2500 now a 04.5 2500.
i would like to find a 1 st gen to play with , thanks, always liked the simplicity of my 92

 

I don't know of the difference betw the two as my w250 rides like it's a 350. But I will chime in and be the first to welcome you to the site!!

Welcome to the site my friend!

 

rear springs and maybe wider rear brake shoes is all. When you bought the cummins it allready was a one ton in all respects.

 

I have a w250 with factory overload springs. I have seen w350's that don't have the overloads, and in fact have less springs then my w250. My dad bought mine new from the dealer, so I know it has not been molested. I think some trucks have a "trailer package" and mine is one of them. It had the larger brake shoes on the rear too.

The w350's have wider brake shoes, and bigger slave cylinders, but the same drums. A person can upgrade a w250 to one ton brakes. The w250 has 32 spline 1.41" axle shafts in the rear, and the w350s have 35 spline 1.5" axle shafts, but both are dana 70's.

I have seen very very few w350 single wheel trucks. The w350 duallies have larger wheel studs....5/8" I think, were the w250 has 1/2".

Now what does this all mean? With the exception of larger studs on the dually, and 2 extra rear tires, there is not a real differnce between a diesel equipped w250 and w350 trucks.

Michael

 

I had an '82 W350 gas (It had some major 'quality' problems, but was pretty stout)

What is the robust quotient for the Dana 70's?

I haven't heard of many failures (but I might be missing something)

 

The dana 70 is pretty stout, and holds up good behind a stock and even bombed cummins engines. They will break the pinion in truck pulling applications. What really needs to be watched on the dana 70 rear is the backlash of the ring and pinion. After they get a lot of miles, especially if you tow, the backlash needs to be checked and adjusted. The backlash will continue to get higher and higher, then the contact pattern is comprimised. I lost my 355 rear pinion gear at about 225,000 miles, which I believe happened mostly because I never checked/adjusted the backlash. Trucks that towed more then mine has, lost them sooner, in my experiances.

Even at high horsepower applications, as long as its not getting truck pulled the dana 70 works well, if its maintained. Kinda like out getrag transmissions.

Michael