1988 blazer, no spark?

Aparrently not interested in answering our questions.
Ah, he's a regular. Usually chimes in later in the night. I'm sure he fixed a sbc with no spark by now. Not worth trying to find the problem when the parts are a dime a dozen. Just get it running and get it out of the garage. He doesn't need 500 **** customers. 100 good ones will make him more money and he'll be home for dinner most nights.