420a to 420a turbo

[eclipsegs2gst]

so i would like to know how safe it is to make a 420a to 420a turbo, what would be big problem, what would be the most likely engine problems?

Thank you for your help.

 

[Shadow98]

The 420A can handle 7-9 PSI on a mid sized turbo with your basic 255 fuel pump and 12:1 FMU and around 10 with bigger injectors + SFMU or MS or Portfueler. The main factor in this would be the condition of your motor. I think it was AWDynamite was the person who ran 16 PSI on the stock block with the Portfueler, but I do not recommend this. It takes tremendous knowledge and time to get something to run like that.