I’ve seen enough cracked 400 blocks in my life to sink a barge. Concrete, girdles, both. But then again we have a lot of high horsepower Mopars in Pennsylvania that race the crap out of our stuff. Not dyno queens. lol 😂

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