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Old 09-30-2025, 02:45 PM   #1
1964FarmFreshC10
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Join Date: Mar 2025
Location: Shelburne, Ontario
Posts: 125
is it my transmission or diff whining??

My 64 C10 has a 230 I6 with a 3 on the tree.

When driving at speed there is a loud whining noise in the cab that goes away when you let off the accelerator. Right away based on that I would assume its rear end noise but its so loud in the cab it almost has me thinking its possibly the transmission.

Is there any trick to telling which?
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