I'm running stock manifolds, 1 bbl carb on a '59 261. I've run fentons / 2bbl , etc in my youth, must have liked to have to tinker & tweak on the road back then.
What Oil Filter Housing did you use? one like that could solve some problems for me.
1951 3800 1-ton "Earning its keep from the get-go" In the DITY Gallery 1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.