Drag Racers are the funny because when you ask them they all say with that much room 250 should be easy.
A good baseline to learn from is the performance of a pure stocker like you will find in a magazine test.
It does not use the 'tune up" to measure results against others but is a standard for comparison.
In test after test of high performance bikes, the duration at top speed was beyond the design of the machine and the heat build up among other things actually caused them to slow down in less than a mile.
Things that worked at a 1320 ft drag strip, failed at 1500 ft on the dirt.
1 mile on pavement, or 1.3 in the dirt is close and 3 + at Bonneville is something else again.
The only straight across comparison is the riders ability, that so many can't believe to be such a large measure.
All the rest is mostly "ROOSTERING".