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Old 10-19-2016, 05:18 PM   #1
OUbesto
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Join Date: Oct 2015
Location: Lincolnshire, IL / Burlington, WI
Posts: 209
Hard shift from second to third gear

Guys,

I have a '70 c10, 402, th400, LWB. TH400 tranny shifts extremely smooth from 1st to 2nd and 3rd to 4th. However when it shifts from 2nd to 3rd, it slams into gear. At low rpm it isn't as noticeable but given a little throttle, as soon as it shifts into 3rd, there's a hard jolt! Again, upshifting in other gears is smooth as well as downshifting is good. Any ideas?
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1970 C-10 CST, LWB, 402/400, A/C
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