hot rod,, I know you have heard this before but,,,, ignition failure does happen in the chamber on running, The coil will break down under load, I know cause this was my problem after all that I did to mine just as you have. Put an after market coil and new coil wire on ( HEI upgrade) you'll be surprised at the difference it makes over a stock system. If you have already done this I don't know what else to tell you at this point. there is a thread some where on the forum that has part #'s and all the electrical hook up for it. If you cann't find it let me or all of us know and I'm sure one of us will post it again or point you in the correct direction for the up grade.....Donald
