Originally Posted By Supercuda
Probably missing the ground wire from the back of the pass side head to the firewall.


That ground was omitted in '70-on. They molded the ground into the negative cable that screwed into the radiator support near the battery.

'70 Super Bee 440 6 pack 4-spd 4.10 Dana N96 EB5
‘70 Super Bee 440 6 pack 4-spd 3.54 Dana FC7
‘70 ‘Cuda 440+6bbl 4-spd 3.54 Dana N96 EB5 V1W