I used two Rochester B's from mid 50's Chevy 235's on a warmed up 261.With a heated intake they actually carbureted quite nicely with the stock jetting.Of couse they did leak a little fuel as usual.
Some guys I know prefer Zenith carbs,or Strombergs,or Carter Yf's.With some fiddling around on jetting,they all seem to work pretty well.
I saw a twin SU sidedraft set up that appeared to run well,bigger SU's from a jaguar I believe.Looked old school I thought.


70 Triumph 650 cc ECTA current record holder