Currently running a 340 727 in a 73 Dart Swinger, about 400 HP at crank, full interior, mostly strip 1.9 60ft times.
current converter is 9.5" 3600 flash stall.
I shift and cross the line at about 6000 rpm.

Question is: what would provide better gains??
upping the stall to 4200? or putting a low gear set in the 727 ??
A 408 is the future plan for motor (1 or 2 years)

Chris Schwartz 73 Swinger 340 12.451 @ 108.78 73 Gold Duster, needs a plan.