Two brand new converters, one 5000 and the other 5800, has tried leaving at numerous different RPM's........ While it certainly could be a converter issue, it would seem as though this has been ruled out. I still say a footbrake launch might prove interesting...... Besides being easy and basically free.
A tale of two cars, 68 dart 440-727-9" vert, 3200 lb loaded, car left good, wheels in the air ran 6.80 in the eight. 86 Daytona 2500 lb loaded same engine-trans combo out of Dart. Best was 6.55, left like a turtle. Had converter made (same flash) for car then ran 6.08 best.
