Thanks for your post Hotrod Lincoln. Unfortunately, I don't have near the experience or even the confidence to mess with the Holley carb. I was leaning toward installing an electric pump and regulator to bring the pressure up to the 6 or 6.5 psi required by the Holley. The other option, but my least favorite and much more expensive, is to consider switching to a Weber DGAS carb. I have read on a couple of posts that the Weber requires very little pressure, usually around 3 psi so I thought it would work well with my stock mechanical fuel pump. As far as your question of my fuel pump output volume, I am not sure what mine is. I can tell you that Summit Racing has a Carter replacement pump listed for my truck. They show the specs on the Carter to be 15 gph. Using the equation from Holley on how to find gph required, my engine requires a flow rate 11.7 gph, so I think I am okay on my flow volume. I wish I could tinker with the carb based on your suggestions but I know that is way beyond my ability level. If you have any thoughts on going to an electric pump or switching to a Weber, I would like to hear what you have to say. Thanks again for your time.
