id even say 4.88 or even 5.13

leaves room if you wanna run bigger than 40"

 

i think 4.88 or 5.13 is getting a little low, you dont wanna go to low or the motor will wanna rev all of the time and if it is reving it well defuel and not put hp or tourqu,

but 3.54 is deff to high for 40 " tires

 

4.56 for sure!

 

ok thanks for all the openions guys. now at least i have a better idea. i didnt think those tires with that gearing was very dependable thats why i wanted to change it.

 

yeah with 40'' tires and 3:54 gears, that is a lot of stress on your drive shaft and pinion. i would go with a 4:56 at the fastest and prob a 5:13 at the slowest depending on how and where you drive.

 

lower gears will lessen the stress for everything

 

ok. well i never drive on the freeway really. i do about half in the city and half out in the country doing 55. so i think im gonna go with the 4.56. should i feel a big change?

 

yea it shuld have more get up and go

 

that is correct. the only think thats kinda the down side is with slower gears the pinion head gets smaller, which in tern has less teeth contacting the ring gear. this makes it suffer some in the strength department. unless you out doing hard launches all the time or dumb stuff its not really a problem.

 

after all the money i have put into it and the price of a 40" tire i dont do much crazy stuff. it does do a one tire fire pretty good though.