Webstershotrods,
I assume that you have read the HRM articles about Frank McGurk's dyno tests on a
261 and a
216-1 (
216-2, 216-3, 216-4, 216-5, 216-6 )? I ran a McGurk dual manifold with two BXOV-2s on a 235 and a 261 that I had in a 1953 Chevy 210, back in the fifties. It ran quite well - better than stock - and even my mother did not complain when she had to drive the car.
I later replaced the McGurk manifold with a Harper with three Stromberg 97s, along with a milled and ported 848 head and an Isky E-2 cam. It ran well, but the idle was a little high (about 800 rpm) and it took some experimentation with the accelerator pumps to get the throttle response as it should be (without stumble, etc.).
In the early sixties I got a 12-port head and used a manifold with five Stromberg 48s, just for racing. I put the whole engine in hibernation in 1962 when I went back to school, got married, etc. I now have the engine in a
street rod. .
I'm currently building another 261 to put in an AD pickup. I am looking for another McGurk manifold to use the BXOV-2s that I am collecting. I still have the Harper, and I would like to try it at least once.
Sounds as if you have an interesting project. Best wishes!
Hoyt
