Do I need a new converter?

Looking at the overall engine “recipe”, aside from the EFI( no real experience at the track with that), and perhaps the hyd lifters not willing to rpm high enough to be able to use up that cam......... it seems like there should be close to 10 second potential there.

Unless it’s way heavier than it looks.

Assuming 500 STP fwhp, 10% loss in the car, 3400lbs at the line....... should be at the bottom of the 11’s(7.0’s 1/8).