starting a slant six for the first time in 15yrs ???

ok. so I tore the carb apart. no rebuild kit or anything just shop towels and carb cleaner. It was a little dirty so I cleaned it up and reinstalled it. One thing I did notice was the (what I think) idle jets at the very bottom front of the carb have no adjuster on them. they look almost pressed in??? Is that normal for the holley 2280?

Anyways I put it back on and she ran halfway decent for being hogepoged together.

But having no experience with the slant 225/198 (all I know is its the taller deck height) Are they cold blooded engines??

It ran like a cold blooded sob but I couldnt run it long enough to warm up (no water yet)