Oh yes they did. I don't read or watch anything. I was there doing stuff as it came out. Had a guy insist on putting a used HEI ignition in a 1970 LT 1 engine, see post #24, and it definitely stopped pulling at 4,500 rpm. Same for a Corvette 327. A points distributor fixed both. Chevy junk is cheap and quits or breaks way too often, that is why there such a high demand for that junk. It is not better. Maybe after 50 years they got it sorted out. I don't have a Chevy, I used to rebuild engines and I know better. I don't care what they use.