Need help with this vacuum reading

The lunging doesnt happen at first.....only after sitting at the light for maybe 30 seconds or so.....if I let up off the brake and drift a bit and then reapply, it os ok again for a bit.....over all, street manners are OK enough to drive around. The vibration bugs me a bit though...that coudl be a convertor issue too I guess....

Someone on another forum suggested just starting fresh with a different engine , build it the way I want and then go from there....But for now, not an option.....

I am sure you guys are right...I have a cam in it.....that coupled with the stock convertor and I have the issues I have.

Can I drive it this way for a bit without damaging anything? I can live with the driveability issues for now.....

Yeah I think 3.23 or 3.51 (??) is what I was considering....nothing too crazy.

I would also like to confirm what I have in my rearend now.....the tag says 2.76...but who knows if the previous owner tinkered with it and left the original tag on, ya know?

Can someone refresh me as to how to figure that out? Do you turn the wheel and count the number of rotations versus the number of driveshaft rotations? Whats the math involved?

Not sure as far as a convertor......I know that it, the rear end and cam all work together.......I guess the cheapest/fastest thing would be just to swap out the big cam for something smaller......but ideally a rear gear swap and cam swap at the same time would be best....so maybe thats something that will need to wait a bit....

As its stands, I get around 9-10 mpg it seems......so at least thats a good thing....LOL,...compared to what I thought i would get......