Post 11 second small block combos

Fast340cuda said
Switch from victor 340 to M1 single plane:

11.47 @118, 1.6 60'

That's a HUGE gain for an intake swap! Was it 100% intake to intake?

Poor Victor casting?
Mods to M1...porting?
Any fuel curve changes...jetting, PV's??
Same track and weather conditions as your previous best?
Launch and shift RPM the same???

Thanks!