Engine vacuum lines diagram needed?

Tiny
DISCO LARRY2
  • MEMBER
  • 1977 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
I need a vacuum line diagram for 454ci motor. Calif. Emissions. Chev.C20.
Tuesday, April 30th, 2024 AT 7:07 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Because of the model year, my manuals are somewhat limited. However, I did find a vacuum schematic for a CA emissions specific to your vehicle.

Take a look at the schematic and let me know if it helps. Also, if you are trying to find a leak, here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know.

Take care,

Joe

See pic below.

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Tuesday, April 30th, 2024 AT 7:28 PM

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