JBrady

Does changing gears from 3.27 to 3.76 cause any problems with how the ECU functions? Driveability problems? Where/how to get the speedo properly recalibrated? Thanks

Cleanshots

iTrader: (2)

well your rpms are gonna be higher but the speedometer is off the tranny..

TuanLegend

+1

BartleDoo

iTrader: (1)

Yea so the speedometer will be inaccurate after changing the diff ratio. The speedometer is based on output shaft RPM so if you increase the gear ratio from 3.27 to 3.76 your output shaft will be spinning more for a given speed than before and thus your speedometer will read higher (proportionally to 3.76 divided by 3.27) by approximately 15%.

mtnrat

iTrader: (1)

Any good solutions to address the speedo error? I have about a 25% error with a W58 swap and a 3.26 diff.

JDMmuscle

iTrader: (9)

In for this as well

account2x

iTrader: (5)

This post is from 2001.

mtnrat, there is no 3.26 diff. The correct label is 3.266 or rounded up 3.27. You require a speedo calibration device such as a yellow box. But I would advise putting back the stock 3.92 diff. Besides the obvious performance advantage (3.26 is far to tall with the w58's 2nd and 3rd gear ratio) you'll be left with about a 4% error before factoring in tires.

4thHorsemn

But he doesn't mention what tranny he has, for a v160 and a lot of power, the 3.27 would be perfect. Right? But if in fact he's talking about w58 your right

BartleDoo

iTrader: (1)

It lists the W58 conversion in his sig. But hot damn this is two threads from 2001 that you just bumped CleanShots! WTHeck bro? lol Must have been drinking a little and digging through the archives or something.

mtnrat

iTrader: (1)

I have been driving the W58 and 3.27 for a while now, close to 3000 miles. It is quicker than the auto ever was and is better for passing. I like the longer gears as I do most of my driving on the hwy. It is what I want for how I drive. If i was ripping around a city I would like the shorter diff, but it is great for what I want. I will look into the yellow box. I put a speed calibrator in my 80 series landcruiser when I put in 4.88 gears and 35" tires. Worked great for that, but I had explicit instructions on which wires to use to make it work for that model.