I put the same cam in a friends 292 last week and he got the spring kit that required fly cutting the head for the larger springs. They set up for 115# on the seats at 1.70 spring hight. Has a pretty smooth idle, but will blow the tires off from a idle with a turbo 350. I like the cam and would like one in my 250. I have the 262 grind now (Lanati) Have fun with your build...J
