newbie questions

[goodino5x]

hello fellow psd owners. first of all, thank god for sites like this. that being said, to my questions. i recently purchased a 96 f350 crew cab long box with 134000 miles on it for 1000 bux. have changed the oil, installed a bills custom intake, TS 6 position chip and a diamond eye 3 inch dp to 4 inch full exhaust. i believe it has at least 4.10 gears with the 5 speed manual. yes it is 4wd. revs are high at 65 mph, around 2500. what ive heard is the sweet spot is closer to 2000. tires are 235 85 16's. can i get closer to 2000 with a tire swap amd salvage some mpg? spend the money on a newer truck, or what. i love this thing and dont know what to do. input is greatly appreciated, and conversation is appreciated even more. first diesel so please be gentle with me.

[creekfreak]

You prob need to regear to 3.55 to get closer to the 2k mark. I've got 3.55 with oem size tires and she runs about 1900 at 60. I do have an auto so I don't know if there's any difference between that and a standard.
Good score btw!

[goodino5x]

ive been hearing that. kinda pricey from what i can find though. hate killing my in town mpg though. gettin roughly 17 now, and when we pull at 65 getting 12. decisions, decisions.

[creekfreak]

I don't think you'll get much better then 17, maybe 19-20. AFA 12 while towing..... Slow down!

[C4 MIKE]

the gears you have are best for towing but if you want mpg 3.55 is the way to go you would have to run about a 37" tire to get your revs down where you want them but that big of a tire would defeat the purpose with rolling resistance rotating mass and the aerodynamics of needing to lift it 6 inches

[goodino5x]

I know creek freak. Gotta discipline myself better. C4, that's what I was guessing and don't want all that trouble either.