The hole I drilled is not for venting. It's so I can see the spark inside to get the cam/crank offset timing set. Apparently there is very little adjustment possible, and you are supposed to use a scanner to set it. You tube university showed how to watch the spark from the rotor to the pin inside, turning the distributor to make the spark as short as possible. I opened up a pretty big hole next to the #5 terminal, so I hope it works. If it does, I'll still have the cap for when I do the intake gaskets on this thing. Both china walls look to be leaking.Hey, Dave, some of the caps had vent holes in them way back when. It was to prevent condensation. As long as the hole is down low, it should be OK.
This is for my Vortec truck, BTW. I kinda have two projects going right now.
Sent from my moto g power (2021) using Tapatalk