Can someone give me some ideas on how to chase down a problem with my car backfiring through the exhaust when I let off the gas? It's a 440 with a Holley chokeless main body carb and QFT metering blocks and bowls.

I thought it might be an exhaust leak at the collector gaskets, but I replaced them both to no change.

Assuming no exhaust leak, it would have to be carb related, right?

Thank you.

Greg