[hobgoblin351]

Hey Metal, congrats on getting it up and running!! You've got to remember that 351C's are notorious for having no bottom end. They do not preform well at low RPM's. When mine was running people would leave me at the line then I'd catch them after my RPM's got over 3000. Its the large intake ports. Oh and just so you know, what feels like a bog when you go WOT (wide open throttle) is really your engine NOT getting enough fuel. All of that can be dialed in but it takes time. Be patient, change one thing at a time to see how it effects excelleration. You've gotten some good advice here already, not much I can add.
If all the tuning fails the only thing I would suggest is Port Plates. (but then you'd have to take the manifold off again) They bolck off the dead spot on the intake port. Making it smaller thus increasing the intake charge velocity, increasing low RPM performance and throttle response. Without choking the top end because they're the same size as the smallest restriction in the port anyway. Jeez did that make sense! lol Hell I confuse myself sometimes! Good luck hope everytinhg turns out ok

Johnnie