Lets talk clutches

mcloeds were at 2400 lbs had a friend with one, he installed my 1400 lbs in car , it ran two tenths quicker, did not slip 1800 lbs is about the minimum i would run, i used a 1400 lbs in my 340 duster, for years, it weighed 3370 just food for thought. does yours have c/w levers ? btw, his was a 360, dart, full dresser , ran 12.20 in quarter mile.