Mitsubishi 4G63T Swap Guide — EVO Engine Build

The 4G63T from the Mitsubishi Lancer Evolution is one of the most proven turbocharged four-cylinders ever built. Stock internals hold 400whp reliably, and a fully built version is a 600–700whp platform on pump E85.

Engine selection: The Evo IX (2006) 4G63 has the best factory spec — balanced crank, improved rods, and the strongest piston rings of the generation. Evo VIII is also excellent. Avoid non-Evo 4G63 variants (Eclipse, Galant) for performance builds — they lack the improved internals.

AWD integration: The 4G63 in its natural Evo habitat is AWD. For other chassis (WRX engine replacement), maintaining AWD uses the factory transfer case and front diff with appropriate driveshaft adapters. Rear-wheel-drive conversions in drift builds require significant drivetrain work.

Building the short block: For builds under 450whp, factory internals are fine. Above that, install Manley or Wiseco pistons (8.5:1 for E85, 9.0:1 for pump 91) and Manley H-beam connecting rods. ARP 625 head studs are mandatory above 400whp.

Turbocharger: The stock EVO IX turbo (TD05H-16G) is good to about 320whp. The TD06-20G is a popular street upgrade for 380–420whp. For 450whp+, the EFR 7163 or Garrett G25-550 on a quality manifold is the move.

ECU: The AEM Infinity 6, Haltech Elite 2500, or Link G4X are all excellent. Evo Engine Management expert tuners are available worldwide — find one who has logged experience with the specific platform before booking a tune.