The Stovebolt Site Forums The Shop Area Engine Shop Hydraulic Lifter confusion

My '58-'62 235 engine had a couple of hydraulic lifters go bad. So I pulled the side cover and discovered that I have two types of lifters in there.

http://i1236.photobucket.com/albums/ff441/AZ59apacheguy/IMG_1527.jpg

http://i1236.photobucket.com/albums/ff441/AZ59apacheguy/IMG_1525.jpg

I have 10 of the one on the left and two of the style on the right. I found replacement lifters on ebay and they look like the style on the right, not the left. The one on the left also does not have a hole in the push-rod seat of the lifter. Which style is correct??

Hy AZ59apacheguy, I'm not sure which "style" is correct, or identical to the o.e.m. part. To me they look like the same type of lifter manufactured by different companies. If I'm remembering correctly 235s don't have hollow pushrods so the hole in the top of the plunger which sends oil up the pushrod to the valve train is not required for the 235 application, hope that helps.

Most aftermarket lifters have a hole in the push-rod seat.
From 1953-62 original Chev lifters did not have a hole in the push-rod seat,1950-52 did.
Both types are fine.
I prefer the type with a hole in the seat. I cut a groove across the bottom of the push-rod, This allows trapped air to escape,(1950-52 push-rods came from the factory this way). See pic.
This prevents high speed lifter noise.