Baseline power run with a stock crate engine (dyno headers though) cranked out 90 hp more than claimed at 520hp.
https://www.enginelabs.com/engine-te...veaway-engine/
Then they have the brand new megazilla, which has a bottom end built for boost, ported heads and the choice of 2 different cams. Rated at 615hp.
The more I see of this engine the more impressed I am. 615hp NA is impressive, and it would probably behave like a stock production engine. Would make a brilliant engine swap for a Falcon, especially with a 10R80 behind it. Only downside is cost.
No wonder Herrod sell every one they can get.
https://www.fordmuscle.com/features/...gine-on-crowd/