Grant:
Whoopsy:
Grant:
EnglishManInNY:

The most powerful one is the one in the RSR and that one is rated at 510HP with restrictor. Cup car has a even lower HP , 485HP.

Those race motors also need a rebuild every 100 hours. 

But yeah, take out the restrictor a motor can probably do 600HP. But still need a rebuild in 100hrs, maybe even less.

I thought the Cup can last 100 hours (improved from 50 hours in the 991.1), but I thought the RSR is only good for 40 hours or so...

I think its 40 hours too, but the bigger factor is sending it to porsche for rebuild,otherwise no warranty, and I don't think people,other than race drivers,wanted to do that