Dizzy full advance lock...need help

[jeff1216]

1978 280z

Head is back from the machine shop ( e88 head all new 280 valves and springs, hot cam)

Arizona intake with a holley 390.

MS square port header

I am going to be putting it all back together this weekend.

I am interested pinning the dizzy at full advance......How do I do this?

I can see how to pin the vacuum advance with a small machine screw but doesnt this car also have a mechanical advance?

If so how do I pin it?

Do I need to remove the entire dist. to do this?

How many degrees of advance do I need to set it at while at 3k rpm?

What type of performance gains can you get by doing this?

Thanx in Advance

Jeff

[Dtsnlvrs]

I would not recomend trying to "pin" the mech advance cams.....but I will tell you that you want around 33-35 degrees total advance at 3k rpm.