Here are the best places to look:
* Pontiac Restoration Parts Suppliers: Companies specializing in classic Pontiac parts often have service manuals or reproduction diagrams. Try searching online for "Pontiac LeMans parts" and browsing their catalogs. They may sell a factory service manual (FSM) reprint, which will have the most accurate diagram.
* Online Forums and Communities: Websites and forums dedicated to classic Pontiac cars are excellent resources. Search forums like the Pontiac section on sites like ClassicCars.com or others focused on muscle cars. Describe your specific engine and options; someone there might have a scan or photo of the relevant diagram.
* eBay or Similar Auction Sites: Sometimes you can find original or reprinted service manuals or parts catalogs on auction sites. Search for "1972 Pontiac LeMans service manual" or "1972 Pontiac LeMans parts catalog."
* Local Libraries or Automotive Libraries: Some libraries, especially those with a strong automotive collection, may have access to old car repair manuals.
* Helm Incorporated: Helm is a major publisher of automotive repair manuals. They may have original or reprinted materials for your vehicle. Check their website.
Before you search, it's CRUCIAL to know:
* Your engine size: (e.g., 350 cubic inch, 400 cubic inch, etc.)
* Transmission type: (Automatic or manual)
* Options: (Power brakes, air conditioning, power steering, etc.)
The more information you have, the easier it will be to find the correct vacuum hose diagram. Providing this information in your searches on the resources listed above will significantly improve your chances of success.
