Offenhauser 4 barrel with what carb?

now for an unbiased opinion. a 600-650 is just to much for a more or less stock slant. people seem to do pretty well with the edelbrock 500 straight out of the box but the mpg isnt that great. if you dont mind a little initial tuning the holley 390 is the way to go performance/mpg wise. you could even get the 4bbl-2bbl adapter and run a holley 2300 series. ive tried the stock 2bbls that people run with the super six setup, they were ok. the small 4bbl really woke it up higher up in the rpms. the 390 was aslo trouble free (after initial tune) for 8 years. if you arent into messing with carbs find an edelbrock bolt it on and just accept what happens. if you dont mind getting gassy once in a while get a holley and tune it to perfection and reap the benefits.