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View Full Version : 79 GMC Sierra 2wd 305


nikolisalex
January 28th, 2019, 04:03 AM
I am rebuilding a 79 that originally had the 250 motor and turbo 350 trans. I put a 305 in it and I’m noticing some of the wires are different. Does anyone have and wiring diagrams and also vacuum diagrams to share 77047705


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