balance shaft - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

balance shaft

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Old 11-12-2008, 11:01 PM
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What is the purpose of the balance shaft in the 3800, would removing cause any adverse affects?
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Old 11-13-2008, 01:43 PM
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to remove the harmonics of the motor while its running, and its only removed when people install a double roller, and most dont remove they just remove the gear off the front of the shaft

people have removed it, but you need to plug the oil feed hole in the block or put dodge 440 cam bearings in, also there is a nasty vibration
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Old 11-13-2008, 06:55 PM
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O I see, I was just wondering because i was reading about intenses race ready short block and it says that they remove it, i was curious as to why they would do that.
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