I'm still tunning in my motor and have got a lot of useful help from you guys, i went from my motor not being able to idle to low vac reading to carb set up well i fixed all that , graemlins/hurray.gif my ? is what is the ideal rpms to have your motor idle, i have a 454 with a 850 dp and a nice LUNATI cam right now its at 900-1000 rpms with 12-13 gh of vac the motor runs and sound good but is this to high of a rpms, i did start with it at 700-800 rpms but my vac reading was at like 7-9 gh
what would be better for my motor
my timming is at 16 deg. base and 38 total
what my hei mech. adv. adds i'm not sure yet
i'm still working on understanding the hole timming thing out , HAY BUT I'M GETTING CLOSE :D

I usually set my rpm at around 700-750, if your rpm gets to high at idle some time it has run on when you shut it off. If you like you car to idle that high and it shuts off fine, then enjoy it. Now in the summer time, when I run the AC I will turn the rpm up a little, because if I am driving and come to a stop for awhile, the engine will lugging because of the AC and the cam thats in the motor, and the blower, etc. So whatever you like, and it runs good, then it's fine.