i need some advice ya'll i have a 240 cid w/ 3 on the tree not sure what my gear ratio is but if i'm doing 45-50 mph i prettyy much topped out if any one knows what i can drop in my truck to make it a better daily driver especially with gas prices let me know and ill post in the want adds to for gears that would work if any body has any thing let me know

 

sounds like you are running in the 4s in the 350s range is probly all the 240 wants to pull or 3.70 depending on tires

 

you meen like 4:10 or something do i need 3:83 more like a car gear right

 

I would say if you running stock tire you have at least 4.11

with stock size tires and not pulling much you can probly run 3.55 which would be in some cars
since you could have a dana or ford rear end the ratios may vary some,but in the nieghborhood between 3.50 and 3,70 should do good
don't know what year truck you have but in the year specific forums you can get some good advice

 

its a '69 f100 240 cis three on the tree not sure yet wich tranny i have or rear end have not had the time yet to get underneth and look thanks for the help though