Hi.

Car is a lt1 vette.

I wounder when singel 3" size exahust is not enough?
My new engine is going in and should produce somwhere around 400chp@6000rpm.
My exhuast would look like this:
Hooker longtube headers going in a hooker 3inch y-pipe to a singel strait 3" pipe (instead of a cat ). Then a set of magnaflow dual 2.5 cat back system.
I am worried that the singel 3" will kill much HP.
Perhaps I need true dual 3 inch all the way??


Care do give me some feedback on this?

regards

 

there are pleanty of heads/cam lt1 f-bodys making over 400rwhp with not only a single 3" catback, but also 1 5/8" shorty headers.