1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

GVR-4 4G63 SOHC want more power

Posted by relindwto6, Jul 18, 2020

Please Support JNZ Tuning
Please Support Fuel Injector Clinic
  1. relindwto6

    relindwto6 Probationary Member

    Joined Jul 17, 2020
    usa, New York
    Hello guys!

    I have a 4G63 powered 8th gen Galant, with 136hp, totally original. I love that car, love revving this engine over 6000rpm, but I would like to have more power(at least 40-60hp more). What can I do?

    Sohc to dohc conversion, can give me more power? Can I put an aftermarket turbo, and everything else on it? Will the ecu and the other elements (pistons,etc) can handle the more power? The engine will be as reliable as the original 4G63? Or is it easier to put in a 4G63T? If yes it's a plug N play stuff?(except the wiring) Thanks for your answers.
    speed test
    Last edited: Jul 19, 2020
  2. pauleyman

    pauleyman DSM Wiseman

    Joined Nov 19, 2011
    oklahoma city, Oklahoma
    If that's a US spec car it's not a 4g63. It's a 4g64. It's layout is on the passenger side and does not share the layout of the dsm platform. Thre have been people that have turboed them etc.
    There is similar engineering between all sirius model motors 4g63, 4g64 etc but modification is model specific. You may want to check out some galant forums such as this.

    Street Build 3K  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
  3. CrackedDSM

    CrackedDSM Proven Member

    Joined Dec 17, 2009
    Roanoke, Virginia
    If it's the 4G64, you can Evo swap it fairly straightforwardly. IIRC you only need to add a few wires inside to use the Evo ECU as well, so read read read.

    I'd save up my money and time, and read like crazy, and toss in a basic Evo longblock, Evo ECU, and enjoy it until the transmission explodes and then debate something else. :p

    169  3

    2015 Ford Edge Sport
    awd · automatic · Misc Vehicles

    Street Build 1K  7

    1998 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    Street Build 4K  0

    1995 Eagle Talon TSi AWD
    automatic · 2G DSM
  4. ThunderChild

    ThunderChild Supporting VIP

    Joined Jan 5, 2012
    Rathdrum, Idaho
    Kia head, Evo ECU ( I don't recall the pins that you need to add ) and an Evo 8/9 turbo setup would make it a cheap swap and pretty darn fun.

    Street Build 811  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

    757  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 1K  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    2K  0

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 3K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM

Share This Page

Support Vendors who Support the DSM Community
ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RixRacing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory