1971 Pontiac Le' Mans 455 cu. in. engine

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Old 08-24-06, 08:45 PM
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1971 Pontiac Le' Mans 455 cu. in. engine

Does anyone know what the timing should be set at?Thank you.
 
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Old 08-25-06, 05:49 PM
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I was told to set at 12* before TDC.Does anyone know at what RPM?
 
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Old 08-25-06, 08:16 PM
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I dont know if a Lemans came with a 455 but a GTO in 71 has an advance of 12 degrees at 700 rpm with the low and high performance version.
 
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Old 08-26-06, 06:31 AM
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Thankyou, that is what I needed to know.GTO,Lemans, and Firebird came with 455.
 
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Old 08-26-06, 01:18 PM
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Also be sure to disconnect the vacuum advance hose before you set the timing.
 
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