Piston Pin Material - Unexpected
Edit to correct this info!
Ooops....I found a mistake in my spreadsheet.... It's been corrected in the original post and now the densities makes a lot more sense.
273 pin - 7.78 gr/cc as originally found
340 pin - 8.03 gr/cc...... probably a high nickel or chromium steel
Chevy V6 pin - 7.78 gr/cc..... a tool steel or similar
Please accept my apologies for the misinformation!