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4g64 sohc vs dohc swap

2005 Mitsubishi eclipse gs 2.4 4g64
  • Drivetrain:
    Transmission Type:
    Build Type:
    • Street
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  • Hello everyone , I'm sure the this topic has been beatin like a dead horse but never know might find out something new..I just purchased an 05 eclipse gs and trying to plan this out.. so the motor is a solid 2.4 4g64 Sohc but everyone talks about the evo 8 or 4g63 head to bolt on the existing part and make it a DOHC but what if I just left it SOHC and did upgrade let's say pistons, valves, etc etc along with turbo build and I dont mean bottom of barrel upgrades ...would it not still be a good build and get attention? Not saying it has to be in a movie or anything LOL but what are the pros and cons of doing the swap and not doing it.

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  1. Brad4g63Starion
    In my opinion if you're going to do major engine upgrades then switching to DOHC will help you make more power and have the added benefit of being able to pick from a wider selection of upgrades, like cams for instance.

    There's a really comprehensive article written about doing a SOHC to DOHC conversion on projectzerog, here: http://projectzerog.com/sohc-dohc.shtml This website is primarily about doing rwd 4g6x swaps but theres a ton of info in that article about the head swap in particular, what you'll need, how to make it work, and what your options are.

    Good luck with the build, the 3g doesn't get enough love, I like the color too :thumb:
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