I followed up on a tip of a ex sprint car guy stuff was being liquidated. The guy ran sprints from mid 50's till the mid 70's. I went there today and looked over the mountain of stuff that was in the middle of the floor, looking for those on or two pieces that screamed take me home. And I was intriqued by these rods and pistons. A little history first this guy ran flathead ford V8 for a while, switched to flathear ford I6, went to Stude then to Hemis. Now I know a fair bit about flathead ford stuff and don't perclaim to know it all, but these have me very confused. First exihibit a JE forged piston, 0.050 over stock on a 21A rod. No problem Next is where I get lost, on the left is the same as above, but what the hell is that on the right? It is also on a 21A rod, it carries a 3 9/16" bore piston with a HUGE dome. Close up of piston: Oh and they they are JE pistons also. of rods: And then there is this which is also on ford rods: I think this is a I6 rod and piston. The only thing that I can figuire is that the unknown is for an overhead conversion on a flathead block, buy how can you get that pistons in a flathead block. and what overhead conversion. I don't think they are for Ardun neads.