Reversion Reminder with Exhaust Crossover
 

Fill the Head crossover. Do not simply block the Intake manifold crossover with a metal plate.

Reversion alarms: Because Exhaust #6 bombs 4 during 4's overlap. Exhaust #5 bombs 3 during 3's overlap. Explains why carbon Spits up to coat some Carb throttleplates.

I did the Resbond stuff in my Olds heads. One of these days I'll pull the intake off and see how it's held up.