Denk

So the plan is to swap in 4.88 gears both front and rear. My 90 came stock with 4.56 and 2 pinion, according to off-roads chart. So when doing the swap, can I go from 2 pinion to 4 (which seems to be more common for the V6) or does it not matter. I run 32's with the V6, manual tranny and stock 4.56 gears. I can do 70 miles per hour @3000rpm. I want 4.88 gears to increase power and probably to accomodate 33's in a while. Would doing this swap dramatically change rpm's at speed? Or would it be best to wait for the 33's to swap gears?

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~ Those who hesitate are not only lost, but miles from the next exit!

~ 1990 4Runner SR5, 3.0L V6, 5-Spd.
~ 3" BL ~ OME 900 ~ 32x1150 Dueler AT's ~ Magnaflow Cat-Back ~ Optima ~ Manual Hub Conversion ~ FLX-165 ~ Hella 530s ~ ISR

Flygtenstein

IMHO, it is not worth it to only make that small jump.

IMHO, this is off-road tech.

I am not exactly sure how you got a 2 pinion diff in a 4wd V-6.

Denk

Axel code G252. According to off-raods chart, is 2 pinion. What results from only having 2 as oppsed to 4?

__________________
~ Those who hesitate are not only lost, but miles from the next exit!

~ 1990 4Runner SR5, 3.0L V6, 5-Spd.
~ 3" BL ~ OME 900 ~ 32x1150 Dueler AT's ~ Magnaflow Cat-Back ~ Optima ~ Manual Hub Conversion ~ FLX-165 ~ Hella 530s ~ ISR

DarylD

I think 4:88's is just right for 33's with a manual. With that said 4:56's are certainly livable . If you must regear, I would find a bad rear (3rd) and rebuild it and find a wrecking yard factory 4:88 front . Then sell your 4:56s to recoupe you cost. BTW I don't think this is just offroad tech.

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94 4runner 4cyl 5sp, SAS , rear leaf swap ,Fj 80 front axle ,E-lockers
72 Datsun 510 2dr , v6 conversion in progress

toy283

I agree with Adrian, that small a change probably won't be worth the expense unless you can find complete thirds for sale for cheap.

In the early years of the V6 diff (up to about '91), 2-pinion V6 diffs weren't uncommon at all. AFAIK, '88 V6 diffs were all 2-pinion.

Also, to clear up a little possible confusion, the "pinion" in "ring & pinion" is not the same "pinion" in "4-pinion". They are entirely different gears. In order to swap from 2-pinion to 4-pinion, you have to get a different carrier. Swapping ring & pinions does not (usually) require this.

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Dave
Currently own no Toyotas :(

Denk

thanks for the clarification.

__________________
~ Those who hesitate are not only lost, but miles from the next exit!

~ 1990 4Runner SR5, 3.0L V6, 5-Spd.
~ 3" BL ~ OME 900 ~ 32x1150 Dueler AT's ~ Magnaflow Cat-Back ~ Optima ~ Manual Hub Conversion ~ FLX-165 ~ Hella 530s ~ ISR