I took my car in to the shop a few months ago, and the car has not seemed as fast since. I bought it at a point when it was running 11.0's @ 122. The shop told me they messed with the timing, and when they were done, just put it back to a point where they felt it was running best. I asked the previous owner about this and after yelling at me for allowing someone else to mess with the timing, he said I should set the timing to 34-36 degrees advanced from the white mark they made. Currently, it is reading about 15 degrees advanced from the white mark. Would this explain me getting beaten in 3rd gear by an ls1 car trapping 114? 1st and 2nd were close, but in 3rd he just pulled away and I was thinking what??? Anyway, another question I have is what all does it take to 'tune' a carb car...what do they do when dyno tuning? Just messing with the timing and adjusting the carb? The previous owner said he had tuned it perfectly while spending all day at the track and best times may not come from perfectly tuning it on a dyno when running in the 1/4 mile. Why is this?

 

sounds like the previous owner was pretty particular about that car and he pry has it set up to the best of its ability... if i were you i'd leave it how it is just for the fact it sounds like the previous owner had the car figured out and set to good spot