Technical odd SBC lifter ?

pulled this bad lifter .any one ever see a lifter like this, it looks two piece? by the way I think this was a summit lifter.

 

Made In China.

 

I'll ask a real dumb question. What is bad about it ? Hard to tell in the picture, but I see some wear on the cam surface (bottom) of the lifter. Is it just normal wear (how many miles ?) or is it actually starting to dish inward as if the hardening is gone ?
As to the other picture, I think the lifter outer body is "two piece" with the hardened wear surface pressed into the main lifter body. On older lifters I worked on, the parting line between the bottom and main body never seemed as distinct or wide as the picture shows on your lifter,

What was the original problem/reason for pulling the lifter ?

 

That's whats bad about the lifter. They are a "two piece" lifter with the wear surface pressed into the lifter body but the gap tells me its comming apart. I'd say put it in the vise and smush it back together but i woudn't want too risk it comming apart again and wipeing out a cam lobe or worse.

 

Not necessarily. I collapsed a lifter 35-40 yrs ago on my Ford 352 and the replacement (Napa) looked just like the one in the picture, Was about 3/16" longer than the stock lifter. Looked like a piece was added to the bottom. Questioned Napa and was told it was correct. Installed and ran fine.

 

Can't get any better than the two-piece hard face Chevy lifters. The really distinct separation line on that one does look odd though, never seen one like that.

 

I'd be checking the rest of em

 

It's coming apart. Replace with real Chevy lifters if available. Obviously the hardened part is separating. As above you could mash it back together but I would be scared, thats just me!

 

Looks like a chilled iron base lifter(eaton?) ,as falcongeorge said normally the best you can get,but something is going on with that one.

 

it already wiped out a cam lobe.

 

I replaced the cam and lifters.