So recently I decided to rebuilt my single barrel Rochester carburetor for my 1974 Chevy nova 250 and i completely forgot where all the hoses go. Does anyone have a diagram/schematic or pictures of one hooked up. Thank you in advance

Why don't you start with a pic of yours. I have a bunch of engines. Many different types of connections.

Yep, same here. lol How many hoses does yours have? Normally you only have a vacuum advance line and a fuel line, but if yours is later model then it probably has a bunch of emissions crap.

Simple: there's a vacuum advance tube on the carb, if you have an auto there's a trans vac hose on the intake near the carb base and there's the PCV hose that goes into the only port left (the big one).

Not quite that simple.... my single barrel Monojet has SIX vacuum fittings and a top vent. Most of them are not used. PCV does not go on the carb. It goes on the intake.