426 stroker dropped in scamp

I don’t know.
He said he’s using a T/A block, which have thicker main webs and can easily accept 4 bolt caps.

And then you have these guys making well over 650hp without killing the stock block:
https://www.hotrod.com/articles/la-...PlViaSM9QGgGEm2Uc90Z5pphTBUdlguwDI-JY7hu9Ctw0