I have a 2000 SR5 Manual trans, with 4.56 gears and 285's. I am not supercharged. My truck is a LOT faster than the Automatic 4Runners my friends have. I can get rubber in 2 gears and get sideways easily. The rear Grizzly locker helps, but the point is re-gearing will make a big difference. Before I re-geared, hills were a problem in general.
If you haven't done the Deck-Plate mod, do that as well. It's about $10 and adds about 7-10HP and 18-20ft/lbs. of torque from 2000-4000 RPM, which is right where you need it most. Get a free-flowing cat-back while you're at it. That adds about the same amount of HP and Torque as the Deck-Plate mod. Get one of the non-baffled type of exhaust systems. Magnaflow, Borla, Jardine, etc.
I can leave small performance cars like the Acura Integra from the same era as my truck in the dust from stoplights. I shit you not.
Toyota quieted down these engines compared to the original in the T-100 due to their intended audience. They made them sluggish because of that. The auto trans doesn't do this engine any favors.
So, to summarize, re-gear and make the engine breathe better.
My .02
If you haven't done the Deck-Plate mod, do that as well. It's about $10 and adds about 7-10HP and 18-20ft/lbs. of torque from 2000-4000 RPM, which is right where you need it most. Get a free-flowing cat-back while you're at it. That adds about the same amount of HP and Torque as the Deck-Plate mod. Get one of the non-baffled type of exhaust systems. Magnaflow, Borla, Jardine, etc.
I can leave small performance cars like the Acura Integra from the same era as my truck in the dust from stoplights. I shit you not.
Toyota quieted down these engines compared to the original in the T-100 due to their intended audience. They made them sluggish because of that. The auto trans doesn't do this engine any favors.
So, to summarize, re-gear and make the engine breathe better.
My .02