Tunnel ram or no tunnel ram...

Started life as some odd type of odd dome with a ?quench bridge? that I didn't like...

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Wow, that's a very strange piston.
Did you have line to line coat the pistons?
I have a funny story of thinking about builds and doing the math on them, Im thinking maybe no one's done that before...but yeah sbc rod journals have been used. Now I have to try small journal sbc.
I take it you are a machinist?