Need to run all new vacuum lines on a 250 chevy sraight six engine, 1974 nova custom. unable to locate any kind of diagram in 1974 chilton repair manual. can you help?

The 1970 Chevrolet Nova was offered only as a two-door coupe or four-door sedan. Basic Novas had a 90-horsepower 153-cubic-inch four-cylinder engine, a new 155-horsepower 250-cubic-inch six, or a popular 200-horsepower 307-cubic-inch V-8.

get a Chilton repair manual, look on the driver side, lower side of engine

Could be a 194,230 or a 250 six cylinder engine.

More often than not, vacuum line diagrams are located on stickers either under the hood or on the front cross member of the vehicle. If not, go to your local parts store and look up the diagram in a Chiltons Repair Manual. Some parts stores will even print the information you need

look on line internet for vacuum diagram for 1974 comet.

Yes, the engine will swap fine, for the vacuum lines Go to Autozone.com, become member, will give you repair manual,location of parts,diagrams.

This one should be close.

Use a industrial vacume tester, check each port coming off of the manifold, run your lines.

The vacuum diagram for the truck should be printed on a factory sticker right next to the hood latch inside the engine compartment. If its missing or ruined you could try looking inside a Chilton or Haynes manual.