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Old 09-22-2013, 02:29 AM   #26
marvgarr68
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Join Date: Jun 2013
Location: kingman az
Posts: 573
Re: Whine/humming sound under light throttle, some advise?

my 68 c10 when it still had the 250/th350c whined like this drove you crazy on long trips would change depending on load/speed/rpm it was the trans replaced it never had the noise again. Rear ends makes noise when accel or decel try coasting just barely on the throttle and see what it does if it makes noise then trans is bad
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1976 k20, 350 built, 44/14 axles
1968 c10 6.5 turbo diesel,t5 trans
1977 gmc c3500 dually, crew, 4-53t, 5&3 trans
http://67-72chevytrucks.com/vboard/s...d.php?t=591188
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