Street Racing A Nova !

Thick or thin?

I'd run through all the ignition after that and then look into the carb. Possible dirt in there hindering performance.

I say fuel system. Lack of sufficient fuel volume.

If you roll out of it, then roll back in does it pick up? If so, it's was likely out of fuel. The pinging was from it most likely going lean.

Yes. I got back into it and it picked back up !!!