Hello people,
Just got my 454 running (mild, 9.37:1, 770 vac, small oval, 213/219@.050, .515/.530) and with the help of a friend we did the following:

1) Timing; disconnected and plugged vac adv, then set timing for highest vac reading and backed off (retarded) 1". Couldnt get it to go down 2" so that left us sitting at about 19" (resultant timing was about 17-18* initial)

2) Mixture; adjusted mixture screws for highest vacuum reading at idle (in gear, 500rpm) and they were pretty much dead on (factory setting). Any adjustment eather direction and the vacuum drops along with idle quality.

It starts/runs just fine except for my blackened spark plugs and a slight hesitation off idle. So I am thinking that I need to go up one heat range on the plugs (currently R44T) and try adjusting the pump shot for the hesitation.

Your thoughts are encouraged. Thanks.

btw: I have not road tested it yet, driveway tuning only.