In a message dated 2/25/04 7:01:41 PM Pacific Standard Time, gdotsly at loganrec.com writes: The Slick 50 plugged the bleed holes in the lifters and would not let them bleed down. Would the lifter act like a "solid lifter" then? Had a chev with a solid lifter cam and hydraulic lifters. Took about a year to figure that out. Lots of dollars too. Gary Renton, WA.