GM4.8

I have been getting comments that i went too big on my exhaust piping and headers. I upgraded my piping from 2.5 inch to 3 inch, added 1 7/8 headers instead of the smaller 1 3/4 ones. Also added a 112 lsa 220/220 cam, my truck is a 4.8 2008 regular cab silverado. I did all of these mods with future goal of adding a procharger and having correct airflow through the engine, basically the one comment i hear too much is that i am loosing to much power as of right now. In my application, is this true or is it false?

FFDP

iTrader: (2)

I don't see it being a problem, it's still going to make gobs of power that street tires won't hold.

Blown06

iTrader: (32)

Let me put you at ease brother.

There is no such thing as too big of an exhaust system on anything with a supercharger. Anyone telling you otherwise doesn't fully understand.

Exhaust scavenging goes out the window with boost.

03sierraslt

iTrader: (22)

It's fine.

Tig

iTrader: (2)

I'm curious as well but, the answers seem to be more for a boosted motor.

How long in n/a form will it be fine?

Would the same apply for a 5.3? I was looking at a 4" diesel exhaust, my factory is roughly 2-3/4". At least from the muffler back.

How would that cam be for a 07 Tahoe 2wd 5.3?