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My fuel pressure keeps changing. I set it to 6 psi, then after it runs for a while the pressure drops to about 4. When I adjust it back up 6, it stays until I shut it down and let it cool down. When I start it cold, the pressure is up to about 9. I keep messing with it, but the pressure...

Been trying for 3 weeks now to get this engine running right, but having carb issues, I think. The carb is a Proform 750. Took it for a drive today, and first of all, when I first start it, if I let it drop below around 1500 RPM, it dies until it warms up (about 5 min), but the weather is mid...

I'm running braided fuel lines and installing an electric fuel pump (Carter GP4601HP). Where should I mount the pump? I'm thinking of either outside the frame rail just forward of where the forward spring mounting pad is, or inside the frame rail right where it starts to curve up by the wheel...

I have a set of Adjust-A-Jets I'm trying to put on my Proform 62700 (750cfm) carb. They are made for Holley's, but I was told they should work on Proform, too. The problem I'm running into is that the Power valves stick out too far for the Adjust-a-jet Metering Blocks to seat. I bought the...

Has anyone had any experience with engine quest heads? They are based on a magnum casting, but you can get them with the earlier intake manifold bolt pattern. Valves are stock magnum (1.92/1.625) diameter. They are supposed to flow better than stock magnum heads. They were used on a 318 build...

I have a '64 Barracuda with a 273. The previous owner said he put commando heads from a '66 on it. I thought the bolt angle was different in '66, or is that just the angle of the holes for the intake bolts? What are the casting numbers for regular heads and commando heads? I'm thinking of...