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If you haven't tought much about the oil galley Barbell check this out!
SacCityCorvette's
Precision LS Billet Barbell
This is our latest version 4.0 Barbell. It has an even smaller shaft and a larger sealing more streamlined nose.The oil galley oil diverter Barbell in your Gen III & IV LS based engine is something that is overlooked. And yet it serves a very important mission of directing oil to the oil filter. If oil leaks past the Barbell, it will go unfiltered directly to the Cam Bearing, Lifters, Crank and Rod Bearings. The factory Barbell is approximately .020” smaller than the oil gallery, so particles as big as 250 microns can leak past the factory Barbell. Your oil filter will filter out approximately 25 Microns depending on the brand of filter. As the original inventor of the Aluminum Precision fit Barbell, we are always striving to make improvements. Our latest 4.0 update has, as with our previous versions, we use 7075 Aluminum unlike our competitors that are using 6061. Our 4.0 Barbell has a wider sealing area on the front of it, eliminating the need for an unreliable Oring. During our prototyping we tried an Oring on the front and when installing it, the Oring was getting sliced and chipped on the sharp internal oil ports and left Oring remnants that could have gotten in the lifters and bearings.That’s probably why GM didn’t put an Oring on the factory Barbell. See Our other Oil System Performance Improvement Products below.
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I'm just about ready to put mine in and why couldn't an O ring be on both sides?
Wondering if they felt the inner o-ring, if there were one, would catch on the oil passage cutout when installed and cause bigger issues. You can see the passage as he installs the barbell.
I'm just about ready to put mine in and why couldn't an O ring be on both sides?
Hi Tim,
We experimented with the O ring, the problem is that when you slide it in, the oil galley's that come up from the filter are very sharp and cut chunks off of the O ring. These pieces of O ring would clog the lifters and do who knows what else. When doing the prototype we were lucky we able to fish the pieces out on the several attempts that we tried O rings. That is probably why the factory didn't go with a O ring. So we decided it is much safer to just make a better fit.
Wondering if they felt the inner o-ring, if there were one, would catch on the oil passage cutout when installed and cause bigger issues. You can see the passage as he installs the barbell.
Cool design, never heard of the oil galley barbell.
So I watched the video and I gotta ask, why did GM put this there instead of just making the block so the oil goes straight to the filter, what is the point of putting a piece in there that can potentially let oil by and also restrict the oil coming back up?
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If you haven't tought much about the oil galley Barbell check this out! 
