Higgins56 - I think he is asking about your ignition timing, I don't see that on the spec sheet you posted. Do you know what that is?
IF you find you have a conservative timing curve - advancing the initial timing at idle enough may help with your car's street manners. This is a common thing with long camshafts. For example, in my 351c with a moderately sized cam (272 degrees intake duration) I only run about 16* initial advance, with advance all in about 36* at 3200 RPM (In my view, moderate initial timing). In my corvette's stroker with a 286* duration cam, I run 20* initial advance, with full 35* advance all in at 3000 RPM - it really helps with idle and low-rpm cruising manners. My vette idles around 800 RPM. A little lumpy, but doesn't jerk around. The engine likes it and responds well across the RPM range.
However, seeing the specs above if the can is in the 288*, I would agree you may be able to smooth out the car's manners with more initial timing advance. You will probably have to find a way to limit full mechanical advance so you don't over-advance at higher RPMs, but that is almost certainly faster, cheaper and less work than a cam swap.
From earlier discussion in this post, I assumed a very long duration cam (like a 300+ degree cam),and suggested a cam swap may be in order. That was probably not the best suggestion... I should have asked some questions first. Timing can help with longer duration too, but your cam really isn't that big - it should be able to be improved with some tuning.
If you do adjust timing, you may find some carb adjustment is then in order. I would try one change (advance timing, limit full advance to around 35/36*), see how it responds, then try another (tweak carb), see how it responds, and so on.
