Got a friend who had a 750 street demon on a mostly stock 440 save for a boost in compression and an Edelbrock performer base manifold in a large and heavy 66 four door fury. In that car, it just plain worked, made a very good street driver and would still break traction on kick down at highway speed. American Powertrain 4L60E and 3.55 or 3.73 gears. I think you'll be pleased with them. I've a few things I'd like to try on a twin carb manifold myself, but it's more to be different than to have something that makes a lot of sense to do. But we all know that the most power to be had with this application is with two big carbs that squirt fuel down all four holes that all the barrels open up at once on. If I were going to play at this level, I'd go all turd in a punch bowl and bring a whole new set of tuning headaches into my life and run straight up mechanical fuel injection.
