440 with complete rebuild - everything new.

I just replaced the fuel lines and installed a new fuel pump. The car drives great until you hit 3k rpm. It bogs down but it doesn't appear fuel related. The rpm doesn't fall and when going to N it idles perfect. You can't get it to perform or do anything past 3k rpm. Feels like fouled plugs.

The fuel lines and pump were replaced due to corrosion in original fuel lines.

Thanks!