383 build no power

Compression readings are low. I'm guessing the static compression is lower - he used "9.7:1 pistons" with a typical taller-than-blueprint block and it's closer to 9 or less depending on the heads and gasket. Then the .484 is not in advanced enough anyway. Best plan IMO is replace the cam, then you can either have FBO try again or get back to a better ignition setup.