My 3.0 V6 does pretty well, but the guy that had it before me put a few bucks into it. Rebuilt about 50k ago, electric fan(pulled the mechanical one), K&N system, headers, 2 1/2" exhaust, Flowmaster, etc. It's a '90 4Runner, 5 speed, with 4.88's and 35" MT/R's. It
did pull a bit better with the 33's that were on it when I bought it, but I have no real complaints even with the 35's. It'll maintain speed in 5th over the point, and it'll do okay on Pritchett or whatever, even with the stock t-case(although I must note that I have a vast background in the art of 'riding the clutch', as I've been wheelin' with 30-50:1 for a looooooong time
).
For a few graphs and pics and BS and opinions and friendly banter and blah and blah and blah and blah, hit the link below. But don't stay there too long.
http://www.pirate4x4.com/forum/showthread.php?s=&threadid=81530&highlight=3VZE
Okay I'll post the engine map here.