engine dying due to electric fan

trapster said
What are you running for your ignition system ? points, MSD, electronic, HEI. This may be a different issue than the fan.
Is your voltage regulator solid state or mechanical ?

Is your engine effected at higher RPMs when the fan turns on ?
Is the engine missing or just dragged down by the extra load. Take the alternator belt off and see if it still stalls.

Hi trapster, it's electronic ignition, and the regulator is mechanical. it doesn't seem to be effected at the higher rpm's, and it doesn't miss, just seems to lose electrical power and slow down until it dies, quickly (almost like it's running out of gas). trying to get some readings, and check a few other things. stay tuned, and thanks for your help.