is this even on a toyota? no toy ever came with an overdrive 4 speed.
my 4.375s are great with 31s, i can accelerate to 60 uphill without too much trouble and i like how they keep my revs down on the freeway. i'm almost tempted to go to 4.56s when i go up to 33s, but i figure i'll probably just do 4.88s like everyone else for a little more power.
sure is. It's a V8 with an A340( 4 Speed Auto). I have been looking at the gear ratio chart ( A few of them). They are based on the top gear in the transmission being a 1:1 ratio. That is my third gear on the auto. My RPMs at 60mph in 4th(overdrive 0.70:1) is about 1900-1950, third is 2800 or so with the stock 4.10 rear ends. With 4.27 or 4.88's install the calculator tells me that my RPMs at 60mph in top gear is going to be just under the 2800 RPM mark. Now that would seem to me to defeat that purpose of having an over drive transmission on the highway. This truck is a DD and has to travel hundreds of Miles a year on the road. The only time it will see that dirt is fishing or camping trips, plus some snowy road in the winter. If I have a low enough ratio based on the formula, and simply drop TWO 4.70 reduction boxes in line when I need to really crawl. How can I be hurting. P.S. The 284Ci engine will give me just under 400hp if I add some
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