[autocross]

Originally Posted by whiteboyblues2001

Well, as others have said, this (V6) engine is already well optimized. There really isn't much room for gains. It already has a good intake, so a cold-air intake won't add much (but it will make it look nicer). The exhaust manifold is built into the head, so you can't do headers. You can get a ported throttle body, but that won't add much (just help the throttle feel). Plus, if you go with turbos, you end up with about the same HP as the V8 in the SS. And for the price you would pay for the two turbos, intercoolers, etc., you could have just went with the V8 in the first place, and have a warranty. Not to mention, the ATS-V has a 3.6L V6 twin-turbo, but it uses liquid cooled secondary side intercoolers (charge-air coolers). If you want to go that route, it will cost you even more. You may want to look into an E85 tune (if you have the fuel available nearby). That could get you some good gains for the money.

So, the question is, what SPECIFICALLY are you looking for? Cam and/or heads? Intake manifold? Turbo kit? Supercharger kit? Porting the heads/manifold? Stroking the engine?

If it were me, and I wanted the lighter weight of the V6, and wanted significant gains, I would probably look into supercharging it. Much less plumbing than turbos, so it would be much easier to fit, and you can get some significant gains. Plus, it's not outrageously expensive (comparatively speaking).

I supercharged my trucks V6, not gonna go that route again. Although the supercharger itself is cheaper, you’ll make that cost up quickly in fuel economy. The supercharger is causing drag on the engine 24/7, and it’s working harder all the time. That has taken my toyota down to less than 13 in town (no boosting)... Toyota’s are usually very efficient.