My buddy Dodgem is correct
I am running electric fuel pump, electric water pump, electric 16" fan as a puller, Moroso 30% reduction crank pulley, MSD 7AL2 ignition box and also run head lights and tail lights when night racing. Not sure on the make of electric fan but has a good sized motor on it and it will drop my idle down when it engages I just checked wire guage going back to battery and it's only an #8.
Could this and the reduction crank pulley be the majority of my problem


Derrick