Rear end ratio / power transfer

[xtreme80]

I'll keep this simple and to the point. If you look at my signature, you can see what I have done to my motor. This was a 290 horse crate, and I added the intake manifold, carb, exhaust, etc.

My question is this: Even with a 2.73 rear end gear ratio, should I, theoretically, still be able to spun tires if I punch it from a stop? They are brand new tires, so they are sticky, but still... I would think with a 290 horse crate with my add ons, I should be able to spin these things.

Something just doesn't feel right in my truck and I wanna make sure it's not just my imagination.