So I am thinking about putting a p pumped Cummins into a 77 GMC. I am new to the cummins so I need some advise on what to do to it. I want about 400 out of it so what all is needed to do that? What turbo and injectors are needed?
Search function is your friend. better try using it first there is a lot of info and discussion already on here about that. normally you could probably do injectors and some pump work to get 400 out of a stock turbo.