How much hp can you get out of stock engine naturally

 

With full bolt-ons (intake, test pipes, full catback exhaust, headers, and tune) most usually see around 320-330WHP, and that is typically with 3" intakes.

If you go further and upgrade injectors, run E85, ported upper and lower intake manifolds, etc, you may be able to get closer to 340 WHP but that is on the high side. 320WHP is a more "typical" number on a stock motor with no boost or nitrous.

 

I would say somewhere between 325 to 375 depending on what kind of fuel you are using

 

A lot depends on drive line. RWD will see higher numbers than an X due to the AWD sapping; MT v. AT also is a factor. If you do a typical 2.5'' intake, test pipes/HFC, and exhaust, a tune will put you around 310-320whp and 250-260wtq on a 93 oct. tune. Numbers aren't world beating but it's going to be a very quick DD at that point.

Anything more than that becomes a question of $ per HP. Headers, 3'' intakes, ported lower IM / upper IM and throttle body upgrades aren't cheap. At that point, going FI should be considered.