I'll bet the Chevy would need 3.73s to run with the Mopar with 3.23s. Mopar big block live off torque. Cause like Brule says, it's a big block with a small block cylinder head.
There was another episode of engine masters that proved that, can’t remember which one. Even Dulcichs mild 440 saw a major improvement in the entire rpm range with max wedge heads