A vacuum gauge is a valuable diagnostics tool for general engine condition, and can be installed temporally or permanently. The gauges are inexpensive and should be part of any Cleveland owners tool box. Monitor your vacuum by tapping a vacuum line from the intake and operate the A/C.
There are 2 engine load increases when A/C is turned on, torque load from the A/C compressor and approx. 30 amp load from the alternator. A solenoid/dash pot device mounted on carb. can increase idle on demand. Connect it in parallel to the compressor clutch. You may have to fabricate your own bracket.
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