trdeu4ia

I am wanting to regear my 00 prerunner(v6 auto) and wanted to know from you guys if i go to 4.56 gears what it will basically harm and improve on my truck. i'm clueless with gearing. i'll be running 265/70/16. any help is appreciated.

superjoe83

do you know what you have in there currently, some of the taco auto's came with 4.56's stock

trdeu4ia

i beleieve the prerunners came with 4.10 but i'm not sure

superjoe83

get the code off your drivers door jam by the latch, the code will be something like "B03A" or similar, post what you got for a code

Bob_98SR5

trd,

most likely you have 4.10. on the little sticker inside your door jamb, there's a code on the sticker which identifies what you have. i can't remember all the details on which code it is, but if you search here for "gear ratio", theres a few threads that tell you which code to read and what it means.

or, call toyota's 800 number w/ your VIN and they'll tell you over the phone.

bob

trdeu4ia

the code says A340E

superjoe83

thats the trans code, i believe the diff code is the last one on the list, it should start with a "B"

Bob_98SR5

c'mon, do the leg work yourself, man!

trdeu4ia

i found out that it has 4.10 gears. so, can anybody just give some info if i go to 4.56 gears such as pros and cons. will it affect the locking diff?

superjoe83

going to 4.56's from 4.10's is not that much of a jump, you will have slightly better acceleration, but will be turning higher freeway RPM than you would with 4.10's, so your gas mileage may go down, it will not affect the locker at all