This cam was designed for LT1/LT4 in the 90's. Cam sounds great and is good for midrange and gentle on the valvetrain but it idles rough. Wrong lift for that cam. You will have surging issues unless you get a good tune. Cam won't pass a sniffer if you have that.
When engine comes off RPM, duration gives a rich signal and causes ecu to correct , giving the engine less fuel. Stalls out. You will have to play fuel trims, AFR, and throttle position adjustments below 1000-1200 RPM, etc. Not easy to tune at all
