Well I'm having some issues with my carb on my 74 F350. Any time I acclerate hard up ro 50 mph she stalls and sputers and then dies out, if I drive slowly up to 45 no problems, if i drive slowly up to 50 she do the sputer and die thing. I have worked with my mechinac on this one and it is kicking our butts. 1st we checked fuel pressure alittel below 5psi, we changed the pump didn't fix it, we hooked it up to his machine and tuned the carb, the carb is dead on tune, still didn't fix it, checked timing we it was 10 degrees off, after 2 days of working the dizzy finally got it lose and set the timing, still didn't fix it, maybe the floats are off checked those are right where they are supposed to be. What gives? I'm out of ideas. Help please. TIA

William (Tony) Whited
74 F350 Ranger XLT Super Camper Special 460
77 F150 Custom 460
El Paso TX
Semper Fi

 

Maybe fuel volume limited? Crudded up tank strainer, hose or steel line with an air leak under suction, crud or rust restricting reliable delivery of enough fuel over time?