[grivera]

Originally Posted by shermanator2

Randy,

You try to make a point in the video about high lift cams. As I and others have tried to point out in the various threads about this subject, with a properly designed cam, the high point of the lifter travel is independent of the cam lift. It is the lifter drop that varies with the cam lift. The nose of any properly designed cam will be just a few thousandths below the journal radius. THe base circle of a high lift cam is smaller, so if you want to make a point about high lift cams you should show how much of the lifter flat is above your plate when on the base circle.

Originally Posted by GoatZillaRacing

Good point. You can see in the video that the lifter is still completely held from rotating when on the base circle of this .400 lobe lift cam. You should check out the latest short video about how the lifter self aligns.
https://www.facebook.com/randy.repp....20571751861803

Originally Posted by GoatZillaRacing

One area you don't hear about with the drop in Hyd Roller Lifters is the lifter body going below the oil feed hole in the lifter bore. The measurement is 2.000 from the base circle of the roller cam to the top of the oil feed hole in the lifter bore. This measurement is based on a 1.080 base circle cam.
Using our big .400 lobe lift cams, the Gaterman 1012 lifters still have a little room to spare as pictured in the first two pictures. The Sealed Power HT2148 lifters will expose the oil hole and spurt oil when the cam is on the base circle.
Our .377 lobe lift cams have a 1.135 base circle and work fine with either lifter.
Test your setup prior to firing it up by installing the cam and just placing the lifters in the bores. Keep the valley pan off and use your oil priming tool to prelube the engine and you'll see if it's losing oil. Some oil seepage around the lifter body is to be expected but if it looks like the Clampet's striking oil on the Beverly Hillbillies, you're asking for a rod or main bearing failure.
The key is to use a Hyd Roller cam with a 1.135 base circle or larger on a HT2148 lifter. Let me be clear, it will run regardless but at continued high RPM it will pump the oil to the top and bearings are going to suffer.
For anyone who has built an engine with these lifters and a large hyd roller cam, IF you don't know your cams base circle dimension, call your cam manufacturer and find out.
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Does any of this information help with your situation? What are the full specs of the cam you're using?