Question about ignition timing on 327

[R_W]

Originally Posted by Captainfab

The initial timing isn't as important as the total timing. You want about 34-36 degrees at 3000 rpm with the vacuum advance disconnected. I would try connecting your vacuum advance to manifold vacuum and see how it likes that. There are quite a few threads about setting your timing, in the 'Engine and Drivetrain' section here on the forum.

I agree completely. I have a 327 in one of my other vehicles, I set it up about 10* BTDC no vac advance. Mechanical advance with the distributor has it another 20* by 3K. Vac advance adds another 10* or so. You will know if you add too much initial timing as it will be hard to crank warm. Vac advance direct to manifold so it is in at idle.