Is it normal for Lifters to pop-up out of their bores?

Tim,

That is just a lifter on the top of a cam lobe. Normal condition. If you turn the engine over this one will drop down and others wil lift up.

Hi Forest, 

Many thanks. I thought that the lifter movement was further down into the block and that it wouldn't be observed and that maybe it was a sleeve holding that lifters that I was seeing. I haven't tried to turn it over to see if they move up and down. So thanks very much for putting me right! Greatly appreciated!

Cheers, Tim.

normal with room for improvement. not all lifter bores are chamfered equally, some blocks got a harder lean on the cutter than others and the chamfer is much deeper on some blocks. lifter bore bushings can be ordered taller than the stock lifter bore length and intentionally installed with the extra length standing up above the top of the stock lifter bore. this will guarantee that the lifter oil band does not get exposed at max lift and oil pressure & volume lost out the top of the lifter bore. roller lifter builds benefit from tall bushings, they're actually almost necessary due to the extra height of roller lifters. Bill Wydendorf offers tall bushings 1.75" vs 1.5"

http://www.wydendorfmachine.com/reamerkits.html

Many thanks for the info!

Cheers, Tim.