71 240z
Specs
L28 N42 block/ N42 head
Dual SUs
MSA 6-1 header
Electronic dizzy 78 280z
280zx 5 speed
Lowest timing I can get is around 900 rpms. The manual says 600 rpms. I need to do this in order to fully tune my dual SUs. Do I need to set mechanical advance and vacuum advance before I can do anything else? Any help is appreciated.