A higher stall convertor, gasket matched Victor intake (not super Victor), a higher stall convertor, and did I say a higher stall convertor. I went 9.80's with a 520 lift cam and a 750 Holley at 2700 pounds so a big carb isn't a must have. These engines love high stall so how fast do you want to go

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