What gear and stall? That cam is going to want some of each. Your carb is also a tad small. I'd run a 750DP. And Manifolds? Is this in a Duster? That cam is going to like to breath, you are dumping all that fuel and air into the cylinder, once it burns it will need to get out. Headers would be better but Hey it's your car. I;d say if you want to use that carb and mani's drop down on the cam some.