I recently submitted this and did not get a whole lot of replies, but for those of you that have encountered this problem I have found a fix. If installing the MSD 8360 "Ready To Run" dist. and Blaster 2 coil,( you don't need an ignition box with this setup ) You would normally run your green wire to the + side of the coil, or if you are using a ignition box, to the specified tach post. Simply connect the green wire to the - side. Presto ! RPM's galore. Dan graemlins/hurray.gif