Thanks for the replies friends. It is a 32/36 Weber with Auto choke. I played around a little with the idle speed adjustment and fuel mix screws. Set the idle a tad higher and the fuel mix to less rich. Still having the same problem. I reckon its got to do with either the dizzy as most of you have said so far or perhaps the fuel pump? What could be wrong with the dizzy and what should I check for? Appreciate the help once again.

sounds like dizzy probs ... maybe a broken balance weight? but could also be over fueling ... does it have an auto choke?

Agre with clyons8 sounds like its getting to much fule.
I put quad fcr's on my ute and it was running way wich whenever I accelerated quickly it would bog down so I would have to back off and go again.
The answer was to re-jet the carbs....

Sounds like the clutch is letting go mate, pressure plate isn't as 'pressurey' as it used to be haha. Mines currently doing the same in my daily, once it warms up it's generally better but still slips when I don't change down gears to overtake or whatever.

Seeing as it the hesitation has carried through the carb swap you may want to start checking the distributor and associated components (vacuum advance etc).

To me it sounds like the accelerator pump within the carb is set a little too heavy so that it is over-dosing the engine when you suddenly press the pedal. This pump is designed to squirt an additional supply to the engine when the accelerator is suddenly pressed (to provide enough fuel for the sudden increase). I'm not sure what carb you have but you can normally adjust the setting on the pump so that it gives a lighter dose instead of dowsing the air-fuel mix ratio and causing the engine to splutter.

Another noob question. I've been having a little problem when driving my daily ute. For about the first 10 min. or so of driving I am having some sort of hesitation when hitting the accelerator. Happens in first, second, even third gear. When I push down the accelerator, the engine rev's up then bogs down right away and it stays bogged until i let go of the peddle...pushing it in further doesn't help any. If I let off the accelerator even the smallest bit the engine rev's right up again and I gain the power back..however, it will bog down again a little later down the road. It does this even if I have enough rpm's to shift to the next gear...when I hit the gas after shifting it bogs down again. Seems to go away when the engine is hot after about 10 minutes or so of driving. It did this before I changed the carb to my new Weber...and the intake. The problem seemed to go away for awhile at first but its back now. Any ideas? Cheers.