Help me diagnose problem

[muckyp]

Ok I have finally got to the point of starting my truck after it has sat for many years. I have had the truck about a year and a half and the PO said he and his son had been working on it for several years. It has a 454 with HEI. I have gotten it all rewired. It started up with out too much problem bit it won't stay running. After it runs for a couple of minutes it starts popping and then will backfire and die. It seems to prefer being choked a little. If i attempt to accelerate at all it will die. Any suggestions as to the problem?
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