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40 Deluxe · 05-17-2015, 10:24 AM

Talkwrench, that external "power valve" is a 'spark valve', used to control ignition advance for that wonderful Loadomatic distributor vacuum only system. A MOTOR manual from the day explains the theory of operation.

05-17-2015, 10:24 AM	#15
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,779	Re: 97 or 94 what's your preference? Talkwrench, that external "power valve" is a 'spark valve', used to control ignition advance for that wonderful Loadomatic distributor vacuum only system. A MOTOR manual from the day explains the theory of operation.