shannon is a very buisy guy , remember when u call DTA u r talking to the MAN he takes the calls, answers the questions, and does the porting, and he charges LESS than anyone, and he does an excellent job porting, I had a friend get his heads done by Shannon and we mad 360rwhp @5700rpm before and after with 2lbs less boost we made 428rwhp at 5200rpm and the fuel ran out with fuel we will go right past 475rwhp thats a promise.
and for u guys wondering about N/A power improvements .we dont have dyno #s on that setup but, we raced a couple of ls1 s and none of them could pull us it was neck and neck with the heads and mild cams from shannon, with full exaust ,stock gears and intake, so i would say the heads perform, just be patient cause u get that personal service that everyons else promises,with a big company , but u get it with 1 guy. if u have any other ?s feel free to pm me .
Originally posted by Eric Ervin I had a friend get his heads done by Shannon and we mad 360rwhp @5700rpm before and after with 2lbs less boost we made 428rwhp at 5200rpm and the fuel ran out with fuel we will go right past 475rwhp thats a promise.
Is that friend on this board?
99 GT with Novi 1K (and other stuff)
Best run: 13.15 @ 111.53 (on street tires)
CRAP!........You mean on top of waiting for Crane to get their act together, I have to wait for SD to get steady nookie too! I gave my wife the rocks yur talkin'bout, she still ain't too happy that I'm spending all my severence on this car!!!!!!!
Hey Shannan....good phone conversation the other day.....we're going to have a good time at FFW in NH come August!
.....and on an official note...Keep my heads as long as you need to...just make sure they're right, and make sh*t load of power.