Hey guys, before I start putting together the top half of my engine, will my factory tpi setup work well as a 383, or should I get some larger runners. Also will my ('88 corvette)injectors be good enough, or will I need a fuel pressure regulator to increase fuel? I am also not sure if my in-tank fuel pump(also from a '88 vette) be able to perform or not. Any info would be appreciated!

 

You should get larger runners and if possibly a larger plenum.. a whole new intake would be nice. You should do some prom tuning to give it enough fuel, the injectors all depend on how much power you're making. They were probably made to handle 230ish horsepower, so you can't easily add 100 and expenct to make up the difference with upped fuel pressure. Depending on what shape it is in, the pump may be fine.