Lessons in discovery still. So I stopped by the machine shop today to see how the old 360 from the silver Dart was faring as it moved up in the line. Now a lot makes sense in why this motor never found reliability. Pistons were 75 thousand down in the hole and may have been for an AMC 360. Not sure if that matters, but the part number doesn’t match with anything speed pro sold for Chrysler. Besides that they weren’t ever going to get me any compression as was advertised by the guy who built it. Two valve guides were worn and even though the heads had bigger valves the bowls were never opened up. Head surfaces were off 20 thousand and the block deck was not straight. All is right now as the motor has seen a new cylinder bore, head resurface and decking. Will get it done right this time and not some shade tree bullshit job to rip me off because I am not standing there.