We have hashed this out before but I have seen recent questions about it. So, here is the information again for the benefit of our newer M715 owners.

I believe that the spark plugs that I originally used in my truck are Autolite 2344. These cause problems with the spark plug wires because the plug is longer than original and the wire nuts just about hit each other and are difficult to install and remove. One of our members suggested 2407 which is shorter. I have them but have not tried to install them because the truck runs so good and "If It Ain't Broke, Don't Fix It".

FYI, Autolite information, the longer plug:

http://www.autolite.com/Productfinde...il?partNo=2344

This plug is non-resistor and a little colder.

The shorter plug:

http://www.autolite.com/Productfinde...il?partNo=2407

This plug is resistor and hotter.

I know this has been hashed out before. Here is the thread started and researched by "Beast":

Autolite 2407 have we been running the wrong plugs all along?