Originally Posted by pbonsalb
My understanding is that the Rotrex C38-91 on the AA car made 502 rwhp on their Mustang and 555 rwhp SAE on a Dynojet, at 10.1 psi peak boost.
Obviously, the dyno does not reflect daily driveability, and I think that is where a planetary gear drive blower has at least some advantage.
That engine is extremely low compression. The Rotrex will make more power on a stock engine.