Today, dollar for dollar, is the 318 faster than the 340 ???

I agree they are ballpark, but your MPH calculator is way more accurate than ET. Tell me what you think that car makes? Stock stroke 340, 9.4 compression, .585 solid roller, iron heads and a tunnel ram with 2 650s...
My guess at a 7.0 1/8 at 3200 lbs at the start line would be around 540 hp....