2.4L Cylinder Head Swap - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 5 (permalink) Old 04-18-2009, 12:36 AM Thread Starter
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2.4L Cylinder Head Swap

Hi everybody,

I've searched but haven't found anything, I want to inquire about getting the 2.4 head on my 2.2. To answer your questions: Why? My dream is to pump up the 2.2 for a little more fun driving but not compromising my daily driver(at least untill I buy another car, then I'll drop 100 grand and put a viper engine in it lol), but the direction I want to go is low end power. I have a CAI and an SS exhaust and I already felt a bit of low end loss. With the VVT i hope to maintain air velocity at low rpm and be able to take advantage of power I can get from future aftermarket headers/downpipe applications. I haven't learned how it works yet on the 2.4 but im researching and hopefully find a way to apply it to my 2.2. I know Trifecta tunes for bolt ons but I've never heard of them doing something like this. If you know what I'm talking about, do you have suggestions? Any problems that would get in my way? Sound theory? If not, then why? I like good advice and constructive(useful) critisim. Thanks guys
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post #2 of 5 (permalink) Old 04-18-2009, 07:33 AM
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What year 2.2? I doubt it will work because even if you could mount the 2.4 cylinder head on the 2.2 the VVT is controlled by the ECM -- cannot "tune" that into your 2.2 ECM. The cams each have a solenoid and each solenoid uses oil pressure to move the cam adjusters.

The '09 2.2s have VVT now.

Ex-Cobalt Owner
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post #3 of 5 (permalink) Old 04-18-2009, 09:29 AM
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It's not really feasible for another reason. I mean it's doable, but you are going to put more effort and money into it then you are going to get out in hp or drivability. The head alone won't do the trick, you will need the ECU, harness, fuel system (most of yours would work though), as well as some other things. It's not just a simple swap and tune.

You can achieve good drivability, down low power, and more peak power by reworking your existing head, using a ported and polished TB (or a bigger one) and opening up your exhaust. The 2.2 motor is far from maxed out in stock trim.

Repopulating yourcobalt.com one post at a time.

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post #4 of 5 (permalink) Old 04-18-2009, 12:31 PM
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post #5 of 5 (permalink) Old 04-19-2009, 12:35 AM Thread Starter
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06 2.2 And thanks Guys
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