Motion Replacement Engines

[vettebuilder]

I still have the NOS 4 bolt block casting 512 that I bought back in 1972 for my never to be Motion project. I purchased it from Yenko Chevrolet here in Pittsburgh. Back then, with my Corvette Club discount, it only cost #389.00. It is still wrapped in plastic, oiled and protected. There is no stamping on the pad. I wasn't sure if Motion used 512 blocks in 1972, that is why I entered my original question here months ago. I could never find any definite information back then either, so I bought the block hoping it was correct. It sits in storage next to the 074 aluminum heads, Edelbrock torker intake, and a stash of other stuff you could get back in the days for not much cash. Although much older now, I would still LOVE to get that fantasy car built and driveable, just cannot find the time. Sorry I drifted off the thread....