440 Build Plan

What SFT has .644 lift at only 250 duration? That sounds more like a roller. Even my mushroom cam (1.00" lifter) requires 272 to get .652 lift...


I’m .624/.639 with 1.6 rockers at 250/254 @.050...now I need to go check to see exactly what I have...

Edit: my lift is .624/.640 so I was off by a thou.