.:urbandc2:.

I recently bought an OBDII LS.. I was thinking of intalling a turbo.. I had an LS previously and now im thinking how it would run with a turbo setup.. I was talking with my boy and he said to just go ahead and install a b16 head to it.. Ive always contemplated on whether the variable valve timing would affect the amount of power (or results) in which the the turbine brings in.. Now, I understand that an Ls-vtec is a powerful choice. But how would a variable valve timing ACTUALLY affect the power output of a turbo system?

loudassVTEC

First off...its VTEC, not V-tech. We aren't working on cordless phones here. Its not the variable valve timing that makes the difference. The cam lift also changes according to your rpm to make a broader power band. You can make decent low end power, and get decent gas mileage, but at the same time make great top end power. Your power difference is going to be pretty good. How much power is a factor of how well the engine is built, and how well it is tuned. The VTEC cylinder head flows a lot better, has a smaller combustion chamber, which gives you higher compression, allows you to rev higher. Its just a better design, and if put together correctly, can make a substantial power increase.

What are your power goals? The LS engine is a great engine for boost. It has low enough compression, and is decently strong. You can easily make 300+ hp at the wheels with the right setup, and still be pretty reliable. If you want to make a lot of power (400-600hp), Id say fully build a LS-VTEC engine, and turbo that. If you are going to daily drive the car, and want it to be reliable, just put some ARP head studs on your LS engine, and boost it. Get it tuned on the dyno, and you'll be more than satisfied, and still have a decently reliable setup. Just make sure you don't go cheap on things, and do it right, and you'll be fine. Good luck.