How much power can the stock rods in a 383 B handle with a blower?

Mean416 said
The tune is everything. Keep it out of detonation, run good fuel, be conservative with timing. The rods aren't the weak link.

Weird that the referenced engine split just idling, what happened?

RUN GOOD FUEL

I put this in caps for a reason. You can get away with a much larger margin of error while tuning with 110-116 leaded. I have experimented quite a bit in the timing department on n20. My current combination likes timing and octane. I can also get away with more a little more timng running 1/8th mile vs 1/4. High gear is hard on things