My new lifters disassembled.
I didn't get a picture of it apparently, but the oil feed hole is in line with the roller.
Where the current lifters have it on the side of the roller.
Meaning my current lifters feed from the side of the oil feed in the block.
These new ones are to be pointed directly into the main oil gally.
A lifter identical to the lifters currently in my tahoe
Valving is a little different.
In the new lifters there is an oil feed hole that's positioned away from the lifter feed hole.
And the new lifters are super tight clearances.
Disassembling and reassembling it's very noticeable.
Then I had one of the lifter retainer clips fly off on me while cleaning and checking each lifter.
So i started looking at clips from my old lifters.
the clip from the above image is almost a square.
It would work, but not quite as tight..
Then I go into the bin of stuff I haven't thrown out yet.
the Original 5.3 lifters have a clip that's identical to these new lifters.
So, I take it apart to compare.
Identical to the new lifters!
I also noticed the pushrod feed hole in them is also not lined up with the feed hole in the lifter body.
Hopefully this cures my issue.
If not, then I'm going for different valve springs.
Hopefully I can keep my titanium keepers, but whatever at this point.
While I have the heads off, I'll plan the spring valve swap out.
Then I get the excitement of new lifter preload calculations!
I'll do the same "shiming the rockers" up by .040 to correct the rocker geometry, so I'll have some room for adjustment later if needed.
