340 has no balls

17, if the engine in general is out of tune, and the other standard mechanical stuff is out of adjustment then no Holley or anything else will help it. It's typical on a car that was "restored" in the last say 5-6 years strickly for resale or possibly done by someone who knows no better. Manually shifting the Torqueflite makes the low/reverse band and the kickdon (2nd gear) bands interfere with each other and that causes much faster wear on the 2nd gear band. Not havin the proper kickdown setup means the entire transmission is running at a lower pressure than it was designed for... Also leading to premature wear and destruction. In fact, adding the Holley with the throttle lever adaptor might make the existing trans issue even worse. A brand new properly sized Holley would be a 600 or 650 4160 series vacuum secondary. But it will also need tuning to make the engine run right. The difference is you will spend the $350, plus the adaptor before you start tuning things. The basics will apply to the parts you have, and any new parts you buy. BTW, i think an original 340 car is a kick *** ride. They called them big bore hunters for a reason. They should not lack balls...lol