These cams WORKED,in the day.... Never seen a dyno test, on the 270... Horsepower 390-410, about 420-440 on torque. 1200- 1500 r.p.m. split, on peak torque & peak horsepower.... Really an unforgotten set, on parts...(yet ,they still work....).
I really like the Magnum series of lobes for their stability, longevity and power production, they are often overlooked these days. I think your guess and quite a few others are spot on. J.Rob
