Building a Reliable 4g63 Short Block for High Power

Getting your 4g63 short block setup perfect is the distinction between a record-breaking pass and the trailer ride home in shame. If you've spent any kind of time around Mitsubishis, whether it's the old-school DSMs or maybe the legendary Lancer Evolutions, you know that will this iron-block beast is effective at a few pretty wild numbers. But just because the factory block is tough doesn't indicate you can just throw 40 psi of boost in a stock bottom end and expect this to live permanently. ...

April 1, 2026 · 7 min · Mary Leader