My 500 cubic inch assembly went 275 runs in my Daytona (8.60's@155mph) before the block finally cracked. That same assembly is still going strong in a street car now.

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