Why is the 4g63t capable of 400hp....

[GAdriver]

I read that 4g63s can hold up to 400hp with stock internals. Kinda newb question, but what makes this motor capable to hold such power and high boost? I understand it may have lower compression, but what else? Thanks-

 

[uh-oh]

because of strong rods and a pretty advanced fuel system for what the car has stock...but yes 400hp is definitely possible

 

[dsm]

proper tuning too.

 

[Boosted98gsx]

also helps that the 4g63 has a lower compression. Allows the larger turbos to be boosted to their effeciency range.

 

[2gGSX]

Cast iron block, oil squirters to cool pistons, strong pistons/rods, etc etc

The engine *has* had almost two decades of development on it you know, albeit not having changed too much.