You could knurlize the backside of the bearing to take up the space, then machine the OD to press fit in the bore. Many years ago, they knurlized piston skirts to make them fit cylinders that were oversized. it was a poor man's way to keep from boring the block and buying new pistons on daily drivers.
A good machine shop should have a knurling wheel to raise the OD of the bearing, then fit it to the oversized bore in the block.
If you wanted extra insurance against spinning, you could epoxy (JB Weld) it in the bore. JB Weld will withstand 500 degrees, so you're well within that on the backside of a cam bearing. The metal interference fit should hold it, but the epoxy would be extra insurance. The epoxy wouldn't transfer heat, but the metal-to-metal contact of the knurling should be enough area to remove heat to the block. Oil flow will also pull heat out of the bearing shell.
If I were trying to accomplish what you are, I'd certainly try it.
I see you were thinking the same thing I was while I was typing, and looking up the heat properties of JB Weld...............LOL
__________________
Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix
100% Pontiacs in my driveway!!! What's in your driveway?
If you don't take some of the RACETRACK home with you, Ya got cheated 
  
Last edited by Sirrotica; 10-01-2024 at 03:40 PM.
|