Every1sFavoriteGing

1992 Pickup, 4x4 V6 3.0L with the 3VZ-E motor

What I'm looking to do is change the entire pumpkin in my rear end, to another Toyota Pickup's rear end. I'm basically trying to bring the RPM's down while traveling on the freeway because my job travel is changing from 30 miles round trip, to close to 60 until I can relocate closer.

I've heard talks of people swapping out the pumpkin with the gears and using one off of a 2wd Pickup. "Simple" swap from one to another.

In my head this all makes sense but I would like some feedback from people who have either done this, know people who have, or have solid knowledge on the subject.

I realize there are probably 3245763425876234598765 threads on this, but posting this for feedback is easier than trying to search through all of them or finding good keywords.

Thanks in advance for any response. I appreciate it.
-Your Favorite Ging

dropzone

iTrader: (6)

You are gonna want to match front and rear gear sets or 4WD is gonna implode

Every1sFavoriteGing

I don't plan on using 4wd while having the different rear end in, its strictly for commuting purposes with the intentions of swapping back to original during desert season.

JasonYota

iTrader: (1)

What gears do you have currently?
I would be careful about the 2wd trucks because some might have the 7.5 rear instead of 8in.

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Every1sFavoriteGing

As far as I know I've got 4.10 gears

JasonYota

iTrader: (1)

I would double check what you have currently just to be sure.
I can't think off hand any toyota 8in stock gears that are higher than 4.10's

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toyota4x4907

One should be able to find 8" Toyota diffs that will work in '79-'95.5 trucks in 3.90, 4.10, 4.30, 4.56 and 4.88 gear ratios. Some '93-'95 trucks or 4Runners will have 4.88. 4.56 is more common in '91-'95 truck and 4Runners with a v6. Then 4.10 and 4.30 are most common in '86-'95 trucks and 4Runners, manual or auto trans. A lot of older ('79-'83 or so) will have the 3.90 gears. I think there is even a 3.70 or something around there.

JasonYota

iTrader: (1)

Yea but the OP wants his rpm to be lower for highway travel. So he would need higher gears (numerical lower).
If there was some that were 3.70's and he has stock 4.10 that isn't much of a difference at highway speed. I wouldn't think it would be worth doing if 3.70 is the highest available.

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JasonYota

iTrader: (1)

If the OP has 4.10's and swaps for 3.70's that's only a drop of 236 rpm at 65 in 5th gear.

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Every1sFavoriteGing

You beat me to the punch! Its highly informational being able to know all that 4x4907, but I wouldn't take the time and effort to switch to a 3.70 ratio. ATM I'm pulling around 3k RPM to do 75 or so with 31" tires, and im trying to bring the RPM down, and continue on with the same tires as well.

Swimmerboy2112

iTrader: (2)

FWIW the lowest (numerical) gear ratio Toyota ever made came in the X-Runner (which will fit the OP's truck) and that's a 3.15.

JasonYota

iTrader: (1)

Swimmer do you know what years the 3.15 gears came in? That would lower the RPMs but then the question would be does the 3vz have power to go highway speeds at lower rpm with using less fuel than before.

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Swimmerboy2112

iTrader: (2)

I'm about 99% sure that every single X-Runner ever built has 3.15's. I have no idea about the S-Runner (2001-2004 2wd V6 sporty Tacoma) though.

And about having enough power then, it's gonna be a dog which is probably going to cost you more fuel to get up to speed unless you do 90% highway driving.

JasonYota

iTrader: (1)

I know highways are different across the country but could you drive slower than 75? 30 miles one way to work isn't all that bad. I couldn't see regearing if you are going to move closer.

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Every1sFavoriteGing

Hahaha. I've been presented with this "debacle" before of driving slower. It's certainly possible, of course, but not really something I'm used to, I guess you could say. I'm a fan of running through gears and 70-75 is comfortable for me. I'm in San Diego, and stay pretty much in the fast lane the entire time because as soon as you float into the other lanes, thats when you see that the stories of dumb broads talking on their phones, curling their hair, putting on lipstick and drinking Starbucks.... are all actually true!

And the move won't happen for quite a few months, potentially early next year, so until than I'd like to see if this project is at all feasible.

JasonYota

iTrader: (1)

Never knew a x-runner was a Tacoma. With 3.15 gears your rpm would be 2151 at 75. You have to remember that higher gears doesn't mean you will get better mpg. You get your RPMs to low and you will lug you engine and use more gas.

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dropzone

iTrader: (6)

Finding taller tires would probably be cheaper than a set of taco gears.
The taller tires would effectively change your gearing in taller direction you are looking for.
Changing tires way easier than swapping gears

JasonYota

iTrader: (1)

Another way you can look at it is you might get better mileage just from driving more lol
I got better mileage when my job was 45 miles away than it was 7 miles away.

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Every1sFavoriteGing

What size/make tires are we talking here?

Every1sFavoriteGing

I totally know what you mean lol. The soul reason I started riding my bicycle to the 2nd job I used to juggle that was only 4 miles from my house lol.