Originally Posted by cdminter59
That could be a possibility. They do take a long time to warm up. You don't have a spare Performer RPM you could try do you? Maybe a buddy might have one on the shelf? Have you checked your coil lately? Here is how to check it with an ohm meter. How to Test an Ignition Coil
I don't have a buddy with a spare Vortec RPM intake. And yes, I swapped out two different MSD Blaster 2 and Blaster 3 coils. Same effect. It's not in the ignition.