That didn't cure it. Took everything out of the system except the fuel pump mounted on the side of the injector pump and the injector pump itself. If anything, as the engine gets hot the knock gets worse. Now the engine is really vibrating and shaking the entire car.

I may take the injectors out of the 300 that I have and see if they make any difference. Other than that I'm about ready to give up on this 350.

Thanks again for all your help.