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#1
12-29-2025, 02:22 PM
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1975 Formula AC/Heater vacuum line manifold tube placement
Hello everyone.
- I am new and was recommended by my "Pontiac Camshaft Guy", Lee Atkinson. -My son was given his Uncle's original owner 1975 Pontiac Firebird Formula 400. -We are in the process of putting the car together and I have 4 vaccum tubes from the heater box (Yellow/White/Blue/Brown) and 1 from the engine compartment (Black). -The tubes are not in the rubber manifold at the heater control unit. -The control unit has 5 ports labled: 1, 2, 3, 4, 7 -I cannot find any diagram to match the numbers on the manifold to the tube color. -I appreciate any/all assistance |
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