I'm not all that skilled on these older engines, but on my 292 I installed a clifford water heated intake, headers, and a 600 cfm edelbrock and hei. No bog....pulls hard..almost burn the tires without dumping the clutch. Pulled a hill in 3rd from almost a dead stop towing a 2500 pound trailer and accelerated all the way up no issue. Course this is a much larger engine, but what I'm saying is that the 600 cfm edelbrock is used on 383 v8's all the time...as of now my 292 was supposed to be way "overcarbed" but she runs fine and cruises wonderfully. Bogging has something to do with the A/F mixture and means yer either getting way to much fuel or not enough fuel. I work on small engines and same the same principal applies. Check your plugs...if black yer mixture is to rich and will cause bog...if to lean you'll have hesitation and that won't show on a plug. I saw a guy use headers and tripple single barrels on a 216...he's on youtube. And the thing runs fine. A 235 ain't to much bigger and people have used dual carbs on them so....You might consider checking ignition as well...if the timing is off or the ignition isn't advancing then that will cause bog as well. TJ
