This is a fine line the heavier the car the heavier the flywheel needs to be , to light & ht ecar will not launch , to heavy & it wil rev slow
for street strip , a 3500 lb car needs a 35 lb flywheel generally , more gear eg 410 instead of 3,55 will reduce the weight needed but to go with a 12 lb flywheel in a 3500 lb street car will not work well
