Last summer I bought a 350. Edelblrock performer intake, Edelbrock 650 carb. The rest is stock. It ran well for a while, then one day as I was driving up a steep grade, It started popping, everytime I tried to give it more gas. I thought (my little bit of mechanical knowledge) maybe I had a bad ignition wire. I replaced the plug wires with new msd superconductors. I also replaced the cap and rotor. The popping was still there. I thought maybe I had a leak somewhere between the engine and the intake so I checked it with a can of brake kleen and did'nt notice any vacum leaks. Just for fun I adjusted the valves. I thought it was an ignition problem but the distributor and everything else is new. It is not a vacum leak either. I hope its not a flat spot on the cam or a stretched timing chain, since these things cost more money than I have right now. Does anyone know what else this problem could be? Could it be fuel related? I replaced the mechanical fuel pump with an electric unit. I have rejetted the carb one step richer (forgot the actual numbers) also.
Help before I spend more unecessary money