Two Stromberg 97s on a 261 should not be too much carburation. Back in the late fifties-early sixties, I had three 97s on a 261 using a Harper "Stubby" manifold, with no heat, and a Corvette Six exhaust manifold. It ran fine on the street except when the engine was cold and the outside temperature was well below 20F. Most winters I would put the stock manifold back on during the real cold months, especially when I was driving to school every day. I had two different 261 setups - one in a 51 Chevy and one in a 53. I used an Isenderian E-2 cam in one and a McGurk #82 in the other.
