Toluene Dart - '73 swinger

Yanked the engine to fix oil leak, which was apparently coming from the new rubber pan gasket at the back of the engine. HOpefully my fix stops the leak. While it was out, new LUnati Voodoo roller cam was installed, used stock roller lifters (new) and stock hardware from a doner roller block at the pick n pull and some new pushrods from Summit. After a few hours of fighting the battery and trying to get the thing to start, finally jumped the battery to have enough voltage and the msd decided to function.
Unfortunately there is a misfire...Not sure from what, I have spark from the wires. Maybe a dead plug or even a valve too tight.