I was wondering how much HP can the stock bottom end can take and list the head as well if you know i have been trying to search this all day found nothing. TYIA
It does really depend on a lot....supporting mods will help the stock internals stand up to more abuse....but if you try pushing much more than 20psi you will start breaking stuff...the stock heads are very good from the factory but the same can't be said for the rods and pistons...the STI's stock rods are great outta the box if you can get those.
K...that is possible on stock Ej20 internals...you will need all supporting mods (Fuel rails, good tune, etc) to do it reliably...you will need a 18G or bigger turbo, FMIC...it will run ya around 10K for the engine and Drivetrain to make 350-400whp.
I recommend a dog box tranny just because they don't break...ever
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