[muscle_collector]

Originally Posted by Rocky Rotella

So far I have recorded details and/or photos of at least (7) service replacement 9799915 blocks and (5) of them share cast date A063.

Interestingly, (4) of the A063-cast blocks are stamped with an "A" after the part number stamping while (1) is stamped with a "B". Similarly, I have a few 485428 SR 455 blocks that have the "485428" cast in as normal and a stamped "B" follows it. Unfortunately, I haven't been able to determine the significance of the "A" or "B".

I haven't yet recorded one with an A053 cast date. Is there any chance you can post a pic of the casting date, the stamped part number, and the SR stamping on the front of the block? I'd love to add your data to my collection!

I should have taken pics of it, it would take quite a bit of work to dig it out again. I sold a ra2 firebird engine to birdbrain on here and it took some digging to get to it. this one was sitting beside it. (only been sitting there for over 35 years). I did record the SR # it is SR86000