Join Date: Feb 2013
Location: Ocala, FL
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99 F550 Questions...
Hi guys. I have a few questions about my 99 F550. It's an early 99 4x4 XLT crew cab / flat bed, with a 7.3 and 6 spd trans. I bought it new from a local dealer and we used it for a work truck for our construction company. The last crew that used it wasn't very "kind" to it and around the same time it started running bad, so we just parked it. It has been sitting, and has had a few injectors and the IDM box robbed out of it for another truck. I have recently decided it's just too nice of a truck to let sit and turn into a junk heap, so I am going to pull it out, resurrect it and use it as a personal truck to pull my race trailer or boat or whatever. We are going to put a new set of injectors and new IDM in it, a decent tuner, delete the muffler/cat, add the 6637 air filter, and that should be fine for power.
Anyway, I have a few questions to help me get going....
First, The truck is crew cab "cab/chassis". I haven't got out and actually measured the wheelbase, but it appears to have a standard wheelbase like a regular F350 crew cab dually. It has a normal 8' or 9' long flat bed on it like is regularly available at most truck places. My question is: will a regular Ford Dually bed fit? I see the frame appears to be flat and fuel tank is rear mounted, obviously to accept work bodies, but will a regular bed bolt on? I like the flat bed, but since it will be more of a personal truck, a regular bed would look good too.
Second, wheels & tires.... It has the 19.5 wheels on it. The tires are just ok so we need to replace them. My thought was since it's geared so low we could put some larger tires and/or wheels on it to help with the gearing and mpg. I would like to run over 65 mph and get more than 10 mpg LOL. Is there a larger 19.5 tire that a lot of people use with good luck? The 19.5 tires always seemed to be more expensive than big truck tires, so I have also looked at the semi tire style setups, and that's appealing because they would last a long time, but was curious what some common rim and tire sizes to use were? I wouldn't mind lifting the truck 4" or maybe even 6", but some of the semi tired trucks are sky high to clear the giant tires, which I don't really care for. Maybe a low profile tire? I really have no idea, that's why i'm asking...
Thanks in advance for any help.