My 4runner is a 1990 with the v-6 engine.  It runs well, but I think it needs more power.  I have a 1995 Avalon with the 3.0 dual overhead cams and it makes 42 more horsepower than the 4runner.  What can be done considering emissions to increase the power available? I have considered replacing the engine with a dual overhead cam type, but I have been told by Toyota that the bell housings will not work for the switch because of differences between the dual cam engines and the 4runner transmission.

Has anybody seen/done something to increase our power situation, or will i just have to learn to get there slower.

By the way this is my first post here.  This looks like it could become a good source for information, but we will need lots more posts from the membership, and more members. 

Hope to hear from some of you with ideas.

AKoldnav

[QUOTE=praufet]there is no supercharger for the 3.0, dan is trying a headswap, check it out on yotatech.[/QUOTE]

Damn... Didn't know about that..  They should make one... i'll check out the headswap on yotatech... that would be awesome!!

You can search the California CARB database and I have found a few superchargers that are OK with my emissions people.  They are very expensive, in my opinion.  I have found a turbo charger system that is much cheaper, but is not emission legal.  It comes from Australia.

One thing that I did that got quite a bit of power, was to check my timing belt.  When a new belt is put on and the idler pulley is tightened up, there is a tendency for the passenger side bank of valves to rotate about one cog worth.  Mine was in this condition.  Once I corrected this problem there is quite a lot more power. 

I am still looking for that cheap supercharger, but in vain, I think.

Maybe somebody else has had better luck.  Let us know.