4.56 or 4.88

03TundraTRD · #1 (**permalink**) 05-20-2003, 07:00 AM

What are the pros and cons for installing these gears on a v6 auto with stock tires or 20''

TRDKEAU · #2 (**permalink**) 05-20-2003, 07:20 AM

regearing: more torque, sets gears back to stock settings when using bigger tires.

cons: expensive..gas mileage goes down. High revs on the freeway.

I would save my money and get a v6 supercharger instead.

thecarguy · #3 (**permalink**) 05-20-2003, 07:49 PM

I would only re-gear for a larger outside diameter tire. If youve got a 20" wheel but the outside diameter of the tire is still roughly 31" you will be fine. For speed/torque id make modifications elsewhere ie: shift kit and engine.

Cyanide41 · #4 (**permalink**) 05-21-2003, 10:19 PM

Why would the gas milage go down? I would think it would go up, The truck is not trying so hard to turn the big tires after re-gearing.

TMS2U · #5 (**permalink**) 05-21-2003, 10:53 PM

MPH goes down dur to the higher rpms that the engine runs, especially at freeway speeds.

Check out THIS SITE for a breakdown on the calculations with different ratios and tire sizes

Cyanide41 · #6 (**permalink**) 05-21-2003, 11:12 PM

Do you mean MPG?

TMS2U · #7 (**permalink**) 05-21-2003, 11:15 PM

ooooops

Yeah MPG goes down overall and MPH will lower at a given RPM

Leathernuts · #8 (**permalink**) 05-23-2003, 08:19 PM

I thought the same, MPG goes up. But i see the whole pic about higher RPMS at freeway speeds. It probaly all balances out. Now you use less to get get going, but more at highway speeds and vice versa.

03TundraTRD · #9 (**permalink**) 05-26-2003, 12:00 AM

Ok, but Guam does not have any highways and the speed limit is 45 mph so is the 4:56 overkill or should I stay with stock gears.
I am going to run 18x8 rims with 275/60

TRDKEAU · #10 (**permalink**) 05-26-2003, 08:02 AM

I wouldnt worry about it. V6 superduper would only be a couple hundred more than regearing and definitely a better mod, especially if your going the street truck route.

Y2kn1Tun · #11 (**permalink**) 05-26-2003, 09:59 PM

Quote:

Originally posted by TRDKEAU
I wouldnt worry about it. V6 superduper would only be a couple hundred more than regearing and definitely a better mod, especially if your going the street truck route.

Doesn't the S/C run like 3k, new gears for a 2wd would cost like 400 bux, with a locker about 600-800.

I think that 4.56's will work really well for your setup, especially since the speed limit is 45 mph. Joe has some 4.56's with 33's, and he's got the V8. Since you have the V6 I think it'll be perfect.

TRDKEAU · #12 (**permalink**) 05-27-2003, 08:08 AM

nope there less than $2000, I think you can pick up one for 1750 and its only a 3 hour job. I would much rather have this than regearing. IMO. I lived in low speed limit islands, its not fun either way you go.

03TundraTRD · #13 (**permalink**) 05-27-2003, 07:39 PM

Guys thanks for all the replys but what about I f I do a 3'' lift w/ 188 rims w/275/65/18 would I need to regear.

TRDKEAU · #14 (**permalink**) 05-28-2003, 05:56 AM

Quote:

Originally posted by 03TundraTRD
Guys thanks for all the replys but what about I f I do a 3'' lift w/ 188 rims w/275/65/18 would I need to regear.

NO

Y2kn1Tun · #15 (**permalink**) 05-28-2003, 06:46 AM

Quote:

Originally posted by TRDKEAU
I lived in low speed limit islands, its not fun either way you go.

I've never lived there, but going that slow sounds like it sucks.