I have a Kinsler Stack Manifold with 2.9" throttle bores. I would like do a EFI conversion to it. but I am concerned about the throttle bore size. It will be going on a pump gas 496 ci for my daycruiser. I want this engine to have some low end in it. We have been talking about bushing the throttle bores down to around 2" to get the air moving at lower rpms. and making a better signal for the map.
Anybody out there done this? are we over thinking this?