Hi!
If you have set your engine properly and have a good tank set-up all airplanes can take a prolonged dive without problem at full power.
The reason this works is the fuel in the fuel line acts as a buffer.

-It would be interesting to see for how long most of you can dive your planes without engine running out of fuel (or ground coming up and get you...), guess none of you can do it for more than 4-5seconds..! This our engines can easily cope with.