I have the stuff in my sig and I don't plan on changing heads. Should I port my lower, just clean it up or just put it on the way it is??? I have a cobra upper going on a 94 GT. I don't want to waste my time and money if there is going to be no gain. Any opinions?
do #1 and #5 if nothing else. They are pinched from the distributor and need a little port work to work as well as the others in stock form. Knock the casting 'fuzz' off the rest an they'll flow enough for stock heads, plus you can do a little more once you change your mind and get heads.
I was out-of-town for 1 day. I wouldn't do anything to the intake, even the front runners prob flow as much as the head. Porting 2 runners isn't worth the cost unless you have the equipment and can DIY.