Mike96z

I found some 50# injectors from an LS1 for a great price, think they are Delphi or something like that.

Now the question, the guy said they would be less than 50# on my LT1 due to lower fuel pressure? Is that true and if they run at a lesser rate, what would it be???? Thanks for the input.

Injuneer

The LS1 injectors are flow rated at 58psi. At the stock LT1 pressure of 43.5psi, they would flow 43.3 #/HR. Are you sure they are high impedance injectors?

Mike96z

Are you talking about stock LS1 injectors? These are delphi 50#, so don't know if that's factory or High Performance? And are the stock ones high impedance? Not sure but I'm running stock 24# LT1 injectors tuned to 26# so they have to be way better than mine. I have a 388.

Sweetred95ta

The stock injectors are high impedence, and you need to make sure the 50#'s are high impedence also. Injuneer is saying that when LS1 injectors are rated, they do it with a fuel pressure of 58 psi. The LT1 injectors are rated with the fuel pressure at 43.5 psi. You need to know what these injectors are rated at, at different fuel pressures. They will flow less on an LT1 if the fuel pressure's are kept stock.