a6pack is great AAR T?A. carb 340 can and will take size stsrt at 750 780 even 800; that is where u will see most performance. on cams keep short duration 4 area lift as 440 430 . I have run in a 68 dart a 527 lift 300 duration wwith a eldo intake hooker headers. and came out my drive and had my kids tell me lft front wheel off street with 430 gears. o but get a big carb. w auto stall. converter. 4spd and in town 430 will get you 50 mph and fun. thank you!
