seefour wrote:I have a alcohol motor and the cam is in on 107 c/l , 108 sep 775-757 266-273 @.050. the cam is supose to be in at 104 int ex 112 now its 107 int 109 ex.
I agree with other posts here that the .050" numbers might be on the small side, but based on your cranking compression I'm guessing the cam also has a relatively loose lash spec? Maybe .028"-.030"? The actual seat timing might be 20 deg smaller than a different lobe design with the same .050" numbers and a .012"- .016" lash spec. You're intake valve is closing pretty early to get that much cranking compression.
i have a transbrake but never used it, I leave off idle
plugs gapped at .025
In my experience, that tight a plug gap does not get enough spark exposure to the mixture for reliable ignition, no matter what the box. If your ignition can't fire across a gap of .035" -.040" at w.o.t., you need to upgrade to whatever different ignition that will. When you start throwing around a lot of spark energy, your plug wires need to be really good, and completely free of dirt and oil, or you end up trying to ignite the outside of the engine...