Hello .. in my Cuda i have start problem at hot and low voltage . i have POWERMASTER starter and 100 ah alternator when everything is on and engine HOT the voltage go down at 11.8 volt ... not good if you stop the engine and wait 10 minute and start ... i have :
electric water pump
dual electric fans
Aeromotive A1000 Fuel pump
MSD 7 al
CVR electric brake vacuum pump

when headlight is on.... not good ...

i have checked all wire .. all ground ... replaced two alternators... no change..

need 150 ah alternator ?

best starter ? CR is 12:1

Thanks

1970 Cuda 496 street driven 9.22@150
1971 Demon 572 7.82@176
1957 Desoto Adventurer Convertible 345 Hemi
1958 Plymouth Fury Christine
2008 Dodge Ram 1500 Hemi
1970 Dodge ChallengerRT 6pack 4 speed 1 of 135
1968 Dodge Charger RT 4 speed