[blykins]

"The difference in weight between a big inch small block and a big block is like permanently carrying a plump passenger."

No, the difference between a big inch small block and a big block is that you've spent $$$ getting that power out of the small block....and a big block of the same displacement is just getting started.

What plump passenger weighs 50-75 lbs?

Pull that big inch small block Cobra up beside a Cobra with an FE and see which one the crowd flocks around.