Re: Is the GM HEI module necessary?
Posted by Rodgil on Jul 15, 2011; 7:56am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Is-the-GM-HEI-module-necessary-tp3165080p3171351.html
The coils I used are from a Holden Commodore V6 (Australia) which used a slightly modified Buick V6 motor. Im told the Buick used the coils fro 1986 to 1995. These coils were also used in 4 cylinder Vauxhall (UK) and other GM cars. AC Delco P/no D555. Various GM P/nos 10482928, 10472401. GM quote the primary resistance (between the + and - terminals) as .3 to 1.5 ohms @ 20-30 degrees celcius, and the secondary resistance, between the HT terminals, as 5000 to 7000 ohms. The usual plug gap is .060. See info on www.cb750c.com forum topic GM Coil mod.