I just installed an Aeromotive electric fuel pump for mySJ. Pump is rated for over a 1000 HP. It's on a 505 BBC with a 1050 Proformcarb (1/2" line). I have it regulated down to 8 PSI. I think the motormakes around 600 to 630 HP. Coming in to the dock, I ran it 4k for a few minsand went to around 5800 for a few sec's and let out all the way to an idle.Fuel pressure was at 6 PSI right after the pull but at idle it wanted to dieand I had to throttle it up a few times to get it to recover. Then when I wasloading it on the trailer, same thing; nothing else has changed and I put newplugs in over the winter.
I will say that I will never run a mechanical pump on any boat I ever have again. After setting for a few weeks, it's nice to turn the key on and prime the system, pat the gas twice and your off. Beats the heck out of turnig it over and over again.
What should I do? Less fuel pressure? More fuel pressure? What are you guysrunning?