Thread: 87 GMC Sierra R3500 7.4L TBI vacuum diagram
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Old 10-14-2019, 06:47 PM   #2
DieselSJ
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Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
Re: 87 GMC Sierra R3500 7.4L TBI vacuum diagram
There aren't many. I'll try to get a picture of the label on mine.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find
87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4
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