Hi everyone.
I am new to Ram trucks. Just bought my first. I bought it for what it can pull. The truck has had a lot of modifications done to it. The VIN comes up as a 1991 D150 with gas 16 valve engine 2 wheel drive. The truck actually has a Cummins inline 6 cylinder 12 valve engine and is a 4 wheel drive D250. The guy I bought it from says the chassis/power train is from a 1992 D250 and the body is off of a 1991 D150. The truck has oversize tires on it, Cooper Discoverer LT315/75R16. There is no lift kit. When I turn hard to the right, the driver's side tire will rub against the bar that comes off the steering box. I would like to solve this. I went to Canadian Tire to price out the correct size tires for the truck, but they say it takes 15 inch rims. This truck has 16 inch rims with an 8 bolt pattern. I found a 1992 3/4 ton on the Internet and it shows the tire size as LT235/85R16. But it looks like the diffs on my truck would be too low to the ground with that size tire. The truck has Dana diffs (are these stock) front and back. Is there an cheap/easy way to fix the problem when I turn to the right? I would like to keep the big tires as we get lots of snow here in Winnipeg.

Thanks in advance for your time,

Tekkie

 

the front is probley a dana 44 and the rear is ither a dana 60 or a
corprate 9 1/4, danas have their logo stamped on the pinnon nose webing. as for the tires rubing, look at the factory tire size in the door jam, put on 15 inch factory wheels and the rubing will probley go away, put on wheels that have the same backspacing and if their 15's or 16' it wont matter. as for cheap and easy go and get some wheel spacers.

 

Thanks for the info. Going by the door jam will not be accurate as the body is off of a 1/2 ton and the chassis is 3/4 ton. Essentially it is a 1991 1/2 ton body on 1992 3/4 ton chassis. I like the idea of spacers for a cheap/temporary fix. Would I put the spacers on all 4 wheels or just the front 2? The tire rubs on the corner of the tread, not the sidewall. Could the pitman arm (i think that is what it is called) be replaced with a shorter one, not sure how that would affect the steering or if one is even available? Also, what would be the recommended gear oil for the diffs knowing that we can get real cold (-35C and colder) here in the winter?

 

235/75R15 is the factory tire size dont change the piman arm, dont bend it or mess with it heating and bending that will temper it and make it brittle thus more likly to break under stress. you could put them on just the font but it would look weard with the front wheels stiken 2 inches out from the body and the back wheels still under the bed sides i would say to bup them front and rear as for the lube type u should be ok using the factory diff lube up their in canada i think 75w-140 or 75w-90 but dont quot me on that im not shure

 

Thanks again for the info. Just a couple more things. Can you get 15" rims with an 8 bolt pattern (I have never seen them). The guy that I got the truck from told me the rims are the stock rims and they are 16".

 

ya i prettyshure you can i dont know where a guy could find them thoughbut they are probl out their. i never seen 16's on a 92 frame but they could be out their maybe but most d-250 chassies had 15" rims

 

My 85' has/came with 8 bolt 16.5" factory rims . Also a Winnipeg truck.
Chryco