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yes it isThat cam is going to be rowdy
Crane does the same thing in their catalogs, the rpm ranges tend to start artificially early. @248/252 @ .050 dur wouldn't surprise me if more stall was recommended. Not seeing this anywhere near being "on the cam" at 2500. Converter technology has come a long way. With that cam maybe looking t 850 or so idle speed @8-10 vacuum, might not be enough for power brakes. 2200 stockish converter likely not let it idle properly. His cam is ALOT of duration for the street. Good for a light street bruiser. Heavy 4x4, idk, wouldn't have been my choice.
In contrast Turbo-Action did me a "tight 10 inch". Loose enough to idle, drives around, takes off fine, nail the go pedal and it flashes to 3500. A 2.5k wouldn't let it idle and it would hammer into drive from park. The right converter can make 480 ft lbs feel like 600. Don't want them to tighten up until well into the power band or you lose the torque multiplication effect. Building the engine is only the first step.