OK, people. I'm STILL stumped. New distributor cap and rotor. Now getting plenty of spark, plenty of fuel flowing...still won't start. Turns over, starts to sputter like it's going to st art, but nothing. I've changed everything that makes ANY sense re: this problem. Condensers, coils, rebuilt carb, battery, fuel filters, dist. cap & rotor, plugs...wires are new. We've done everything that's been suggested here. Nothing. It's a total mystery. This is a simple engine. It should not be having this problem. And by the way, whoever said that the 383 was a Chevy, um...dude. Really? On a Mopar forum? NOT a small block. That was a mistake. But definitely not a Chevy.