Hello all, got a cam question. So I bought my RR six months ago and I’ve decided to figure out what cam is in this 383, which I’ve experienced some poor performance. She’s been running kinda rich, and just no throttle response. Long story short I’ve torn the engine down to remove the cam because I found a broken valve spring, which certainly is a problem and may explain everything. First, dual valve springs on these heads. #3 exhaust valve spring broke. I’ve found an Erson HI FLOW 2-H grind. Lettering/ Numbers on the cam are B157S8; 108; 581; N. Looking around seems the HI FLOW 2-h grind in a Chrysler big block, advertised duration is 306/306, 235/235 @.050, .472/.472 lift. 108 degree lobe center. Power band: 3000-6000 RPM. So all of that said, too much for a mild street build? My 383 has forged flat tops, 10:1, stock heads, stock 2.08/1.74 valves, edelbrock performer 383 intake, Holley 650, HP manifolds, 2.5” through OEM style mufflers. 4-speed, 3.55’s.