Is there a specific calculation for converting flywheel to wheel power figures and back?

Its for AWD/4x4 drivetrain, is it around 20%?

I previously had a 4x4 Saph Cos that done 246 at the wheels, so would like to know the crank reading?

Also, currently have an Audi A4 2.8 V6 Quattro, runs around 210 just now, but have a supercharger kit that takes it up to 300BHP manufacturer quoted, but thats a crank reading, would like to know the wheel figure?

Cheers!

 

there will be lots of debate.

ive studied it myself and come to this conclusion from my own cars.

rwd hub power add 9% for crank hp.

rwd wheel power add 15% for crank hp.

and from what ive read of other peoples 4x4s

4x4 hub power add 11%

4x4 wheel power add 19%

 

Cheers mate, doesnt need to be accurate to 1HP or that, just for my personal knowledge!