C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

wont shift when hot

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Old Feb 10, 2017 | 02:49 PM
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1985 corvette 4 speed (+ 2 overdrive) 13K miles only. dealer replaced clutch 1K miles ago with same symptom. still car won't shift when engine gets hot. will shift after car cools down. All fluids OK. When I can shift clutch doesn't slip, seems fast, but maybe supposed to be. Appreciate any help
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Old Feb 10, 2017 | 03:54 PM
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Originally Posted by martin3
1985 corvette 4 speed (+ 2 overdrive) 13K miles only. dealer replaced clutch 1K miles ago with same symptom. still car won't shift when engine gets hot. will shift after car cools down. All fluids OK. When I can shift clutch doesn't slip, seems fast, but maybe supposed to be. Appreciate any help
You posted your C4 related question in the C5 Forum.. You will get a better answer under C4 Tech. Will try to get it moved there for you...

Last edited by 8VETTE7; Feb 10, 2017 at 03:55 PM.
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Old Feb 10, 2017 | 04:20 PM
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I've heard of a case when the pilot bearing/bushing in the crank is going out which will allow the input shaft to spin freely when cold but drags the input shaft when hot. This can cause hard shifting when hot.
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