Thanks to all for the info. The guy that I bought it from had converted it over to 12v with a positive ground.
Saw Mill
Does your GMC have positive or negative ground?
Is you GMC 6v or 12v?
Otto : Is the General Motors HEI for a 6v or12v system (does positive/negative ground matter?
lumber sawyer : It look like Deve's system is 12v only?
The guy that I bought it from had converted it over to 12v with a positive ground.
