I have a 351w roller block and started putting it together today. It has a comp cams hydraulic roller cam for a roller block, and I have stock replacement roller lifters (speed pro). I put on the motorsport spider for the lifters and it seems really sloppy, when the lifter is all of the way down its not even in the H-bar. Is there a different lifter needed? maybe one thats taller? Also I had the wrong pushrods, they were way to long. Is there a set just for 351 rollers? Thanks, Bill

 

You have the wrong lifters for the engine.