CAMARO6 - View Single Post - FIC +30 Injectors -> Now XDI +65's

Chrome383Z · 05-20-2022, 05:11 AM

The LT1 pump is rated for 2175 I believe and the LPE is based on it. I’m not exactly sure what all they do but I believe it’s bored out and maybe machined deeper for increased stroke. Folks on here have ran them at higher pressures and I haven’t read of any failures but always a chance of pushing things closer to that edge.

However I haven’t seen anyone get good results cranking the pressure up, flow drops off. The LPE pump flows 10% more at 2150psi then the LT4 at 2900psi. So ideally you’ll want to run at the rated pressure.

Just have to make sure you have enough injector at the lower pressure if that makes sense. Example an LT4 injector at 2900 psi may flow similar to a +30 at 2150 psi. That’s why I bought +30 with my LPE pump. Figure I’m going to need that overhead at some point.

I’ve seen some folks run 2400-2500 psi to help injectors that are too small get more flow, but you’ll sacrifice some flow from the HPFP. Trade off I guess.

05-20-2022, 05:11 AM	#74
Chrome383Z Drives: 2019 Camaro 2SS Join Date: Aug 2020 Location: McCordsville, Indiana Posts: 622	The LT1 pump is rated for 2175 I believe and the LPE is based on it. I’m not exactly sure what all they do but I believe it’s bored out and maybe machined deeper for increased stroke. Folks on here have ran them at higher pressures and I haven’t read of any failures but always a chance of pushing things closer to that edge. However I haven’t seen anyone get good results cranking the pressure up, flow drops off. The LPE pump flows 10% more at 2150psi then the LT4 at 2900psi. So ideally you’ll want to run at the rated pressure. Just have to make sure you have enough injector at the lower pressure if that makes sense. Example an LT4 injector at 2900 psi may flow similar to a +30 at 2150 psi. That’s why I bought +30 with my LPE pump. Figure I’m going to need that overhead at some point. I’ve seen some folks run 2400-2500 psi to help injectors that are too small get more flow, but you’ll sacrifice some flow from the HPFP. Trade off I guess. __________________ 2019 Shock 2SS A10. 2650@10psi/LPE HPFP/XDI+30/LT4 LPFP+JMS/Soler 95mm/Rotofab, E65, CSP 2” Headers/GESI GenII Cats. MM Wild/GM SG3 suspension/1LE Brakes, Velgen VF5 Wheels/GY SC3. JRE Tuned. Last edited by Chrome383Z; 05-20-2022 at 05:34 AM.