Number Cruncher Needed

I have heard there is about a 20% drop in transmission of power from engine to tires. My engine dyno'ed at 300hp at 3100 rpm and 470hp at 5300 rpm.

What would be a good estimate, and I know it won't be exact, lots of factors, but what would the hp be at the tires in first and second at 3100 rpm then at 5300 rpm??

Just wondering.

Torque sits at 517 ft lbs at 3200 rpm and around 425 ft lbs at 5300 rpm

Thx