Hello Everyone,

I am in the process of putting a 1977 240 engine in a 1980 car body. The engine is in the vehicle now but the glow plugs that are in the 77 engine are a series hookup. The 1980 body uses a parallel hookup.

I removed one of the glow plugs from each engine. The 1977 glow plug is 0.693 inches or (17.6mm) and the 1980 engines glow plugs are o.4585 inches or (11.5mm).

Does anyone know where I can get a thread adaptor to covert the 11.5mm glow plug to a 17.6mm size??

Also does any know what the resistance of the 77 & 80 glow plugs are?

Thank-you in advance