I am a new member to stovebolt. I have a 54 GMC half-ton with a 270. I have owned the truck for the last 45 years. I am referring back to Ranger's original post that started this thread. Believe it or not, 6 years after his post I have just installed the same setup in my truck, and I am experiencing the same exact problem. I have nicson headers, clifford intake, and Holley 390 carb. I am experiencing the same engine cutout that he mentions. I already know, however, the problem is that the Holley carb requires a minimum fuel pressure of 5 psi but 6 to 6.5 is recommended. Since I am using my stock fuel pump, my pressure is at 3.5 psi, so I know I am starving the engine during acceleration in 1st and 2nd. I wanted to find out if Ranger ever got his problem solved and what he did. Did he go to an electric fuel pump and regulator? Did he change carburetors? I tried to send a private message to Ranger but I got the message that private messaging is disabled. I am hoping that Ranger sees this post and he or anyone else can reply.
