Execut1ve

I'm thinking of getting some larger tires at some point in the future. the stock gears/tires on the truck now are 3.55's and 29's. Will I have any problems keeping the stock gears with 33" tires? or will I need to regear

khasse

you will probably want to regear, but it won't be a must. if you regear to the same ratio ( i mean tire to rear end ratio) as now you will keep about the same gas mileage.

khasse

3.55s and 33 inch tires would be about the same as 3.08 and the 29 inch tires, which was an option from ford. so i can't assume it would be too bad, just don't plan on hauling any heavy loads, or smoking your tires.

sonofahunter

I have this set up and it is not bad at all. It gets up goes when needed.

hiredman77

I have 3.55's with 35's and its a little weak for my taste. However a buddy runs 33's on his and its about like driving a pretty stock truck with no real noticeable power loss. You will be fine with that set up.

Execut1ve

the truck isn't exactly made of power... I would be pretty unhappy if it seemed to have even less, but I guess I'm balancing power against rpm at highway speed, right? currently I'm at about 66mph at 2k rpm. what rpm do I want to shoot for at cruising speed?

khasse

what you have now is pretty good, and with 4.10s it'll be about the same. here is a nice chart http://www.4lo.com/calc/geartable.htm

Execut1ve

hum, according to that table with 3.55 gears doing about 65 at 2k rpm I should have 37" tires on the truck 0.o

khasse

different transmission ratios can account for that, but it gives a general idea of what is good, and what isn't, and how everything compares.

Execut1ve

what conversion factor should I use to make sense of that table then, and is it a problem that I'm going 65 at 2k?