On a 94 Z28, how much horsepower would be gained over stock with the following combination of mods?

Moroso CAI
Pacesetter Coater Long Tube Headers
Off Road Y Pipe
Magnaflow Cat Back
160* Thermostat
Mail Order Tune

How much horsepower and torque gain through a 4l60e??

I'd guess a real world gain of 40-45 HP gain?

 

Anyone?

Bueller... Bueller... Bueller...

 

I agree with your estimate of around 45 at the wheels

 

Closer to 35 rwhp/rwtq

I went from 255/290 to 285/320 hp/tq with a combo very close to what you listed. That was through a single cat, and a little rich, so I would have made 5 more hp/tq with that taken care of.

Dan

 

I made 270rwhp/302rwtq with that set up, also an auto with a Vigi 3200 stall. Autos don't dyno all that great, but the car runs what it should so I never paid the dyno numbers much mind.

 

i hit 292/321 with two dirty air filters and no tune. i ran two 13.5's that night as well on street tires in a 2500DA