Patrick and Mopart guys, i'm having the same no low end torque problem also. I have a 68 dart 383. It is pretty much stock but bored 30 over, schumacher headers, 383 torker mainifold with a new holley 770 avenger carb, new Comp. XE274 cam and lifters, stock heads ported and polished with HD springs, new pushrods, rebuilt 727 trans, 323 sure grip and 3000 hughes stall converter, stock elct. ignition with orange ECU box. Everything is pretty much new in the motor compressions good, vac.is good but it's totally a dog on the low end out of the hole. the motor runs great and it seems to make good power but it just seems like its not getting the power to the rear wheels at launch. I'm starting to think the new in the box stall converter which i bought from a friend may be clogged or have trash in it. Any suggestions would greatly be appreciated. I have gotten pretty frustrated and don't want to just throw more money at it and hope the problem gets solved. Thanks.