I'm moving from a N/A 377 LS3 to a N/A 418 LS3. I was using the stock LS3 injectors on the stock fuel rail with the 376 and I think I want to move to the OEM ZR1 52lb injectors. I don't recall my injectors looking that short, do I need spacers to run them? Is there a better alternative than the ZR1 injectors?

 

Hmm, maybe it's safe to start off with the current LS3 injectors. I have a fuel pressure sensor plumbed into my old EGR wiring so I can scan fuel pressure in HPTuners.

https://ls1tech.com/forums/generatio...or-sizing.html