So i keep reading about how if you want some easy performance without ripping out your computer you can just tune the Q-Jet. I also read that there good carbs for mild performance. I have a 1986 Iroc with the Lg4. I put flowtech shorties on it and 2.5in all the way back (no cat, dynomax cat-back). I also ripped the A.I.R system out. It says in tech articles that our carbs can do from 750-800 cfm just by making the secondary air-valve open all the way. And i have read various places to then put a G hanger and CK (or something close) rods on it. Will this 700 cfm setup be too much for an LG4?

 

No, because when the AV tension is properly adjusted to prevent bog, the AV will only open as much as the engine can use.