OK....brain fart...I just installed some 1.72's on my stang...it runs like crap...they are non adjustable and bolt down...I bolted them down alright...now the car barely runs lol....do I need to shim the rocker arms or send it to the mustang man...

you probably need to reprogram the computer for your new specs, whenever you start messing with internal parts like cams valves etc on newer cars you need to do this. gotta love that OBDII.<IMG src=smileys/smiley2.gif border="0"></P>