I considered scraping my Keith Black aluminum block because I read on the Internet that I would lose horsepower by using it. I started buying 40 year old stock cast blocks again.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time