forgot about this posting
was getting back into researching this 454 i got and the only thing that came up was my post lol
sorry i dont have a vacuum guage

i did finally get to the back numbers
361595
depending on where i look its 73-80thru90
2 and 4 bolt depending if it came in truck or car
still not finding anything on the c8f441236 stamped under alt.
soon as i can figure out what this thing is for sure. i can start wish listing and budgeting for a healthy rebuild