hp increases on p&p heads and intake

[DirtyBird17]

i'm getting my head gaskets replaced and while i'm getting that done i may get the heads and intake ported and polished. how much of an increase will i see after i get this done.

[DirtyBird17]

ttt, come on guys. are there any ideas. i remember somebody on here getting this done. how much of an increase did you see.

[DirtyBird17]

ttt

[Dominic]

You might see 5-15hp if that - it works well if you decide to do a cam. You have a 3.8 or a 3.4?

[predator5100]

I have a 3.4 and just did this didn;t see much and i'm told i won;'t. Unless i open the rest of the airway up. Exhaust and intake itself then cam and it will all work together

[viper98885]

I am about to have an extra set of 3.4 heads that I bought ported and polished. I have an appointment for a dyno session before the heads go on and I am planning on running the dyno session again after the work is finished. Hopefully, this will bring a little light to the matter. I am NOT doing the cam yet, but instead, just the heads.