I was curious, if I decide to get a mild streetable cam for my bolt on LT1, would i lose low end? For instance, would i be slower from a low roll or dig, but be faster up top?

I've heard that getting a cam will slow you down from a dig, which is why getting a stall and a cam together is a good idea.

I have an LT1 A4 Z28. (Bolt ons, including LT's)

 

That comes into effect when you get a bigger cam 230 duration plus, is when you start to lose low end, I could be wrong tho. I would say for a miled cam supporting mods will make it better but are not crucial, Being an A4 i would get a Stall and a tranny cooler as my first mods.

 

A cam is a trade off of low end torque vs high end horsepower. With an automatic this is not as much of a problem if you are willing to drive around a high stall car. Generally speaking a larger intake runner head acts in the same way. A larger runner typically makes more high end power(not always true) at the loss of low end torque....this is related to the air velocity in the runner. air velocity=torque

 

Exactly how much low end torque do you need? I mean on street tires you can only take advantage of so much low end... I've got similar mods to you and traction is a decent problem through most of 1st gear. I think it would be a wise tradeoff to maybe lose a little low end potentially making it easier to handle at low speeds while picking up a significant improvement through the midrange and up top...