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11-18-2018, 10:30 PM
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#1 |
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Registered User
Join Date: Dec 2014
Location: Euless, Texas
Posts: 510
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TH350 Whining sound
Recently started hearing whining sound coming from tranny. I think someone told me it was the pump and it would probably get louder and then eventually truck would not move, then would need overhaul to fix.
Wanting to insure that I was told correctly.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
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11-18-2018, 10:47 PM
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#2 |
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Registered User
Join Date: Oct 2009
Location: Buhl, Idaho
Posts: 1,438
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Re: TH350 Whining sound
Do you have any history on the transmission? How does the fluid look? Any shuddering, shaking or grinding?
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11 1981 chevy K10 short Bed Scottsdale SOLD 10-26-2020 67 GMC Stepside Straight six/3 on the tree "The Peach" 2020 Silverado Double Cab LT Z71 5.3 8 speed Daily Driver K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934 The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903 
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11-18-2018, 11:03 PM
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#3 | |
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Registered User
Join Date: Dec 2014
Location: Euless, Texas
Posts: 510
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Re: TH350 Whining sound
Quote:
It has the OEM transmission. Fluid good, no shuddering or grinding or anything else.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
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11-19-2018, 12:01 AM
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#4 |
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Registered User
Join Date: Oct 2009
Location: Buhl, Idaho
Posts: 1,438
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Re: TH350 Whining sound
Not a expert but if its whining its probably a matter of time before the pump goes out. On my old transmission the guy that rebuilt mine said my front pump was on its way out but mine wasn't making any noise. I am also having issues with my transmission. Is the noise really loud or is it faint?
__________________
86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11 1981 chevy K10 short Bed Scottsdale SOLD 10-26-2020 67 GMC Stepside Straight six/3 on the tree "The Peach" 2020 Silverado Double Cab LT Z71 5.3 8 speed Daily Driver K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934 The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903
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11-19-2018, 07:35 AM
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#5 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,477
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Re: TH350 Whining sound
Quiet whine or loud? I ask because my 75 has a soft whine when it starts to move. Been that way since my dad first brought it home in 78. Only done about 200k miles since then.
Might be worth doing a filter/fluid change. If its already dying, won't hurt much. If the noise is due to plugged filter, might just fix it. If you find a large pile of metal shavings or other material in the pan, you likely also have your answer. |
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11-19-2018, 07:40 AM
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#6 |
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Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,334
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Re: TH350 Whining sound
Does the whine ever go away? I have had several that would whine in cold weather or just when cold and then goes away.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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11-19-2018, 09:05 AM
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#7 |
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Registered User
Join Date: Dec 2014
Location: Euless, Texas
Posts: 510
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Re: TH350 Whining sound
Seals, filters, fluid replaced in 2016. Hard to tell how loud or quiet it is cause I'm the only driver and can hear it at accelerating from stop or slowly moving in D or R. May go away at higher speeds. Can only hear engine and exhaust then.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
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