its very annoying to be cruisin down the highway basically floored at 75mph. So I was wondering what I could do to get my top speed up so I could actually be able to driveon the highway. I have the 3 speed automatic transmission.

 

not really sure why you would max out at 75 mph , i can get up to 75 going up a slight hill on the highway and my truck is almost all stock , maybe there is something wrong there but im not sure

 

Well, a couple of questions. WHat is your gear ratio? 2wd or 4wd? Any Intake mods? Exhaust mods? Your 3 speed auto can only do so much. What kind of RPMs are you hitting at 75 mph? What is your tire size? ........Brain fart.......

 

pretty sure gear ratio is 3:08 its 4x4. Has a K&N intake filter, the exhaust is straight back but is still stock, and im hitting around 2500 rpm at that time. I can hit 90 if im really trying to torture my truck.

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tires are 31 inch

 

While not knowing the rolling radius of those tyres, 3:08 gears with direct drive will give you somewhere close to those speeds at 2500 rpm

 

so what are you suggesting I do?

 

Overdrive gears are about the only way you will get the engine rpm down.
Your maxxed out on final drive ratio.
Being a 4X it may take some doing, different transmission with over drive is required.
Sorry for the good news

 

thanks man

 

x2. If ya wanna bring down the RPMs and increase speed, Look into an overdrive unit and split the gears. You will essentially end up with a 6 speed trans. Lower RPMs at 75 will also net you much better MPGs. Even better if you slow it down some. The good Lord gave us multi-lane highways and streets so others can pass if they think youre too slow.........

 

If you have enough driveline length you maybe able to squeeze an overdrive unit behind the trans but being 4x4 you will only be able to use it in high range 2 WD drive.
Sounds more like an overdrive setup out of a later model would be the easiest.