On my friends 261. Dual Holley-webers, full race cam, shaved head, cast fenton headers, offy 2x1 intake. Idles reasonably smooth at 650 rpm. Runs like a scalded cat about 200 hp. After building, we had dual rochesters, it wouldn't idle under 800 rpm, and was a dog in city traffic, but the dual webers (from Langdon) have worked great. Maybe we were lucky?
