I know with the older z24 there are mods using different parts from older z24 the like cams. Is there any for 2003 cavalier ecotec but and the engine was replaced in 2010 with 2004 engine i would like to keep this stock motor but get more hp. The second question i see a ton different build for turbos and was wonder which way. is the best like a hyhid motor or just rebuilding a used 2.2 ecotec from the junk yard because i get a ecotoc 2003 motor for $ 200 with 108,000.

No swappable cams between Ecos. You can swap on the intake manifold from the 2.4L LE5 Ecotec (requires a throttle body adapter from Crate Engine Depot), and with bigger injectors and some tuning you can see some gains.

If you're looking to build a motor, you can obviously build a 2.2, or I personally think a hybrid using either a LE5 or LSJ bottom end with a L61 head is the most cost effective path. I'm going the LE5/L61 route. Not sure about LSJs, but if you would use an LE5 block, make sure to get a 06-07 year model as those are the ones with forged internals. If you price things out, there's no way you could build an L61 block with aftermarket internals for even close to the price of a hybrid build.

There's a TON of info on here on both subjects, I would start searching and read up and see what will work best for you.

I'm glad someone could make sense of what was being asked. Why do people insist on using phones as computers? It makes them look like idiots who can't spell or use proper grammar.

And if it wasn't posted from a phone- grade school: it works.

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