Great info, efi-diy. I'll ask guys in the local club if they have the O2 sensor. But I'm a gonna try the shotgun approach for now. With all luck, the package arrives tomorrow and I can try Sunday. Here's the experiments to run with installed values and (new parts values). It may rain this weekend, slow things down...

Power Valve 8.5 (9.5 on the bench, I could try that tomorrow)
Main Jets 51 (54, 53 in delivery)
Squirter 35 (37 in delivery)

Gbauer, I found your last year's thread. You put in 10.5 power valve, 37 squirter and I think 53 main jet. did you stick with those?

I checked my notes on vacuum. at 25MPH I had 12", 35,45,55 all had 13" or 15". Reverse 13, idle 19. Power valve 9.5 probably will work okay, but 10.5 would violate the Summit racing recommendation to remain 2 below the lowest value. But if it's working in George's, another data point that maybe 9.5 is fine over 8.5.


Mark
'67 Camaro L6-250