I used this one for a lot of 8 second passes with zero issues on my 440 based builds.


https://www.summitracing.com/parts/fel-17059/overview/

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