I'll kick it off

I have a 1940 Ford P/U sitting on a 74 Nova chassis. I inhereited (sp) it from my dad who past away in sept. It is a great truck but due to his declining health wasn't able to do much on it over the last year. It has a '75 350 with a TH350 trans. The truck runs rough. I changed plugs, rotor and cap and it ran better but wouldn't stay running. I thought it might be the gas so I changed both fuel filters and filled it with 91 octane. It didn't have much gas in it when I filled it. It runs better but still have the idle up a little high to keep it running. When I step on the gas, it hesitates and sometimes backfires through the carb. I know my dad changed the fuel pump out but not sure what else to do. It is an Edelbrock 1406 and I got on there sight and checked out the videos but nothing has seemed to help. Any thoughts? Thanks

Flathead Red  

I'd say you need to need to pull the carb, clean it out & throw a kit in it.  Then go buy an Edelbrock tuning kit, and try to make it run right.

Personally, I've had no luck with Edelbrock carbs.  I like the old, simple, reliable, versatile Quadrajet.  
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1949 Chevy 1 1/2ton, home-built hydraulic wrecker.  Rustoleum industrial black, with flames.  Flamethrowers out 5" dual stacks.
1962 Chevy C-20, 402BB, 4-speed, 3.90 positrack. Hauls my camper.... among other things.

Hello flatheadred: I agree with packratwrecker it sounds like the excellerator pump is dried out and idle cercuit is pluged and I also think a properly tuned Quadrajet works without tinkering weekly and is cheap to do anything you want to it.