Typo, meaning I made a mistake, it's an 800 CFM not an 850. Edelbrock 800 EPS carb. Stock pick up and 3/8" lines, Holley fuel pump. Guys used to drag race Pontiacs and big block Chebbys, Fords and Mopars all day with mechanical pumps, should feed a 400. I don't know how anyone can stand the noise that comes from the electric ones, worse than Flowmaster drone. And, one electric hiccup and no fuel. I did have fuel starvation at top rpm a few years back, before I redid the engine. I ran a fuel line out the cowl and zap strapped a gauge to the windshield wiper, I was loosing pressure at about 6000 rpm. I replaced the fuel pump and presto, fixed. The gauge showes a constant 5-6 psi. The pump was only 45 years old, why don't they make things to last?