I have my motor torn down now getting ready to put in my hotcam kit, rksport headers, full exhaust, and cai. The car is an m6. Now I am debating wheter to get my heads ported or not.

I know a reputable head porter, he will charge 400 for the heads and 100 for the intake, plus I need a 200 $ valve job (car has 60 k miles)

So can anybody guess what kind of hp the car would make at the wheels without the heads ported, and what it would make with a good port job?

TIA

Tim

 

Provided its a good port job, I would think the addition of the heads/intake porting will probably be worth as much as the hotcam kit itself is...which is about 30rwp give or take a few.

Aaron