C4 Low gear?

[Bobby Fazio]

Is it possible that going to 2.92 can actually slow the car down from a 2.75 or even a 2.46? It seems both my stocker and maverick super stocker have had best sixty foot times with 2.75. And maverick was better with 2.46 and 2.75 than 2.92. Here's the part I'm not quite getting:

In my stocker I have tried 4.88 with 2.92 but that was 200lbs heavier in N. Sixty foots were 1.62 back then. 4.88 x 2.92 = 14.25 most aggressive torque multiplier?

Next I tried 4.88 with 2.75 in L and 200lbs lighter and sixty foot was usually 1.53-1.56. 4.88 x 2.75 = 13.42

Next I tried 4.56 with 2.75 and sixty foots were 1.58, ok I expected that to slow up. 4.56 x 2.75 = 12.54 weak torque multiplier?

Next tried 4.56 with 2.92 and nothing really changed. Still 1.58 short times and now we are at 4.56 x 2.92 = 13.31 should have been damn near close to the 4.88 with 2.75 right?

Lastly tried 4.71 with 2.92 and sixty foots are 1.60. 4.71 x 2.92 = 13.75 should have been a perfect scenario?

All this was done with same converter which always seems to flash at same spot and 28 in radials. Is there more to it than just the ratios? Is there more drag in the trans? Is converter agitated? Has anyone else experienced?