410 stroker, with Magnaflow fuel system, Pro systems 850CFM car, MSD Digital 6 plus ignition with billet distributor.....
The car is running clean up to 6000 rpm, after that the engine starts to struggle " kind of misfire".
We have changed fuel jets, spark plug gaps, changed plugs. But nothing seems to help.
Even when we close the gap from 0.045" to 0.030" it when worst. The car starts bugging completely down after 6000 rpm... I have the feeling it is somewhere in the ignition....
Any help will be appreciated
