Originally Posted by supreme112279
The lt1 being a high performance engine, it like higher octain gas. IT would problally run just fine on 87 but 89/90 would be better and 93 would be best. ethanol is ok if you use your MC often but I hate it. I personally run 93 non ethanol. on the knock sensor, Im not convinced it really works. My camero doesent run any different with it unpluged.
Re-connect the knock sensor, connect a timing light and start the engine, rev it up and hit a motor mount with a hammer if you want to see if it works. If nothing happens, check the knock sensor to see if it's bad. If you use the car in a hot, dry region, you can do a lot of damage to your engine in hte event that detonation (knock) occurs.