Awesome, thank you. I have checked John Mummert's site and I see cast pistons that look like they're intended for a train or custom forged options only? Are there any other options out there?

You can use 312 pistons in a 292 without changing rods, the pin to top distance is the same.  Since your bores are already 3.810, you could use .030 oversize 312 pistons (3.830)by boring the block another .020.  I use 3.830 pistons in my 292 blocks for my supercharged drag car without bore problems.

John - "The Hoosier Hurricane"

Hello all,

I am new to this forum and I haven't been able to find a clear answer with my searches, so I hope someone can help. I have been putting together a 292 y block that I purchased "rebuilt" a few months ago. The engine has already been bored .060 over, but it has some rust build up in two of the cylinders where water had sat. I have already taken it to a machine shop to have main studs installed and for line honing. They told me that they ran a quick hone into the cylinders to clean up the rust, but it didn't seem to help. I don't want this engine to burn oil, so I think I'm going to have to bore it further. I haven't been able to find 292 pistons that are larger than .060 oversize, but I've read the block can be bored up to .120 over. Is this correct? I've read that I could use a 312 piston, but would I need to change the rods or crankshaft? Any advice or information would be greatly appreciated.

Thanks,
David