Thread: 1977 GMC CCDW build
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Old 11-29-2019, 06:19 PM   #46
BigDooley77
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Re: 1977 GMC CCDW build
the hydroboost unit was leaking like a siv so I resealed the unit with a kit from Amazon. heres some other photos of things.
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1977 GMC Sierra Classic CCDW. 454 worked 781s, 277/287, Lift .502/.501 LS 114, Dual plane intake, Dana 70 (4.10) and 4L80e (HD2 kit).

http://67-72chevytrucks.com/vboard/s...63#post8361863
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