Vacuum Secondary Conversion

And in my case as the OP I was dealt an existing engine that was reinstalled in my car. Worked on it a bunch, made it run better but wanted to continue to try and improve its performance but moreover provide me more headroom in not detonating. Just because I can’t hear or feel it detonating does not convince me I am not especially in corner cases such as high loads AND EXCESSIVE heat here in the desert.Oh and shitty fuels…

What I have initially done was:

1. Add aluminum radiator with duel fans and shroud
2. Add a 160 thermostat
3. Went from a 2:73 rear to 3:55
4. Disconnected my heater core (for other reasons)
5. Retard all in timing and slow the curve down.
6. Single to duel plane manifold in process
7. contemplating going to VS set up.
8. Planing on an eventual rebuild to lower compression and change cam since I don’t know what’s even in there.