Question about ignition timing on 327

[Irishbleueyes]

The more advance you put in it ( to a certain point ) the better it will perform and better gas mileage as well. I have a 283 with stock HEI and with the vacuum connected its at 52* at idle. But the vacuum cuts out and the mech side takes over as soon as I crack the throttle. The engine runs amazing now, its low compression so it doesn't ping. Adjust it to your engine, seat of the pants, if you do have a vacuum gauge and it starts bouncing at idle you've gone too far advance.. I know original dist with points is cool but it will run better with an HEI, keep the engine chambers cleaner, smell better, start easier, better mileage and probably more timing that will wake that small block up!