How fast are big block Duster's.

Need help with 727 trans ? Who can build and help make converter choice? or what needs to be installed?'

I have new 340/416 10.5-1 RPM heads, Hughes ported, airgap with matched ports. Lunatti solid roller cam 284 duration/ 570 lift. will have Fi Tech fuel injection. 410 Dana , tubbed with slicks