EFI manifold from a '99 chevy 454 vortec
I bought an intake manifold off of ebay because I'd like to do a megasquirt efi system for my 454. It's an older motor, but I mocked it up and it fits a set of oval port heads fine (and it looks like the ignition will work as long as its not HEI). I'm wondering how much power this intake will make. It looks like I can port it quite a bit (or just clean it up), but it only has a 75 mm throttle body and stock injectors.
My big questions are:
1. How much power can I make with this thing?
2. Does somebody make a bigger throttle body?
3. Is it worth swapping the throttle body and injectors?