You need to look very closely in the bronze sleeves for a tiny oil feed hole drilled through the sleeve. This would be oil for the lifters. A .030" hole is a large enough feed for solid rollers. If no oil feed hole at all, that's another issue. That would mean no oil to the lifters. If it has a giant hole in it like the stock lifter bores, then that's another problem. No restrictor pushrod in the world will be able to block enough oil with some of those clearances. Putting 16 bronze sleeves in a stock block Pontiac is a big job. Did they have a Pontiac BHJ Lifter True fixture to install them? If not, the only other way to get them all in straight would be a semi-auto CNC mill or a dedicated full CNC Milling center with a program for a Pontiac V-8. This would be a rare situation. If they just drilled and reamed the bores for bushings with a giant magnetic drill or a manual mill, without a fixture, the lifters could be going off in every different direction. I would like to know a little more about the shop, what equipment they used to bush 16 lifter bores, stock block or aftermarket, iron or aluminum. Not saying an average really good machine shop couldn't put bushings in but this is a major machining operation that has to be done right. This is typically a $1000.00-1200.00 operation by itself to install 16 bushings on the crank centerline and hone to fit. It's an all day job with the fixture and a manual mill.
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