Ignition or fuel?
Hey guys! How's everybody! Alright so I have a 1972 Chevy c10 with a 350 in it. It was rebuilt like 15k ago or so I think. Don't know exactly just picked the truck up a year ago. So I'm having a electrical or fuel issue. It will only rev till about like 4000 rpm till it starts to pop and bog down. This is under load and in neutral. I started with 12 initial timing w/o the vac adv. the hose and carb were plugged. It barely ran down the street. So I stepped it to 14 and 16 and it got better. The best I found was 22 initial timing. And I figured 20 degrees of timing from vacuum. So isn't that around 42-46 total timing? It's supposed to be between 32-38. So the reason I think it is to much fuel because I don't hear pinging or any pre detonation with that much timing. So if I advance it any more it wants to start dieing so yeah 42-46 is what it's at now. It runs really strong till 4k though! So what else could it be. But as always thanks!