Did the 6-pack have a better cam then the 4 barrel? I think the biggest advantage is the hood. What rpm did you get out of the 340, where did it fall off? Picking your brain for my combo. 70 Duster 340 avs. Why would the stick be rated more hp then the auto? Good luck
The difference between the 4bbl and 6 Pack is just a tick more compression .004 thinner head gasket. NHRA allows the hood on both combos. The TA hood works. The AAR hood is just lighter.
I routinely ran my 72 340 to 7500 and a few times to 7800 in kill mode. The person to talk to about the AVS combination is Chuck Beach even though he runs an Auto (known him since the 70's when he had a stick in the same car).
