Looking for some advice on spring set up. I intend to order some TF240's for a 448, I am using a XE282S and 1.6 rockers. The valve springs in the FT 240 head seem a little light (although comp said they would be fine) and the HR head seem a little heavy for a FT solid. I have seen the isky 8005A springs recommended for this cam more than once. My thoughts are to get the FT head and shim the springs up to 135lbs rather than use the head set up for HR cams.