mrgmc3 Messages: 210 Registered: September 2013 Location: W Washington
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Senior Member
The original alternator on the '78 models is rated at 145 amps
Chris Geils - Twin Cities / W Wa
1978 26' Kingsley w/ very few mods; PD9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, Alcoas, 54k mi