Thanks for the tip. This is more or less a test/mockup motor. I have a nice LS1 sitting in the corner waiting.
$20 got me 2 new assys to my door. The ring gap on the trashed pistons was right in spec. .019 and .022. I cleaned and regapped all the rings to .025 and .028 (ish)
. All torq'd to angle and ready to rock. Decided on the 6.0, 317 casting heads. Compression should be about 8.6:1. Also dropped in a OEM Zr1 cam shaft for $98.
211/230 .558/.552 122.5 CL
We'll see what this test mule can do next spring.