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04 /25/ 24, 3:05pmLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 123[4]5678910 ]
Subject: 1978 chevy 350 motor


Author:
DENNIS
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Date Posted: 06/ 17/ 07, 3:06am

What happen to my 1978 chevy 350 motor to cause it to vibrate when you increase the throttle..
It will idle fine until you increase the speed speed in the engine than it starts to vibrate

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Replies:
[> Subject: Re: 1978 chevy 350 motor


Author:
Rich
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Date Posted: 10/ 2/ 07, 1:10pm

Possible rear main bearing wiped. Any oil leakage from rear of engine?

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[> Subject: Re: 1978 chevy 350 motor


Author:
pat
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Date Posted: 10/ 9/ 07, 3:36pm

Check the fan blades on the cooling fan for cracks. If you don't see any take the fan off and reinstall the pulley with the belts on. If the vibration is still their the flexplate(flywheel) is probably cracked.

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