Start with the carb and timing make sure that carb is opening all the way. Then check the timing. Then check cylinder pressure.
Do you know if the cam the previous owner installed was degreed? Or did he just throw it together to get it sold?
I know that it was NOT degreed in. I asked the seller about it when I bought the car and he said No, He did not have a degree wheel and just lined up the dots.
