landofoz1978

Have a procharger D1SC coming in next week for my 02 Z28. I know the fuel pump and injectors need upgraded. Just wondering which ones of each I should get? Any suggestions would be appreciated.

landofoz1978

I was looking at the Walbro 400lph pump (part F90000262) and the Siemans 80# injectors

Husker98

iTrader: (11)

Do you plan on using an aftermarket fpr? From what I've seen a 340lph pump is the most that the factory fpr can handle but should be able to handle and if your going aftermarket fpr and/or lines I'd go with the F90000267, 430/450lph. That with the 80lb inj on pump gas should support 800whp

landofoz1978

I wont be making anywhere near 800 I have 351 at the wheels so however much the procharger will add with 8lbs of boost guessing a bit over 500 total. Would a walbro gss340 and 60lb injectors be good for that? Or do I even need that large of injectors? Would rather not have to do an aftermarket fpr if possible.

Husker98

iTrader: (11)

For 500whp 42lb and a 255lph would do but 60lb will give you room to grow. Build bigger than you think you need. Some people have pushed stock lines to 700whp.
My bro has 80lb inj and a 255lph in his car and made 470whp with a completely stock 98 T/A at 10psi. 7.25"/4.0" pullies.

Bob@BruteSpeed

iTrader: (16)

The GSS340 and 60lb injector combination works great for ProCharger's in the 8 to 10lb boost range. Bob

conan

iTrader: (5)

I'm running Lonnies double 255's with 60# injectors. Should be good to the 700-750 range. I would buy 80's if I were looking again, but 10 years ago 60's were everyone's recommendation.