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I have an intake manifold with a casting number of 3981067. Does anyone know if this is correct for the year? If not what does it go to. Also it is attached to a 396 with block casting number of 3955272. any help greatly appreciated.
 

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I think its 3931067 --- 396/427 - 69 - Q-jet - Oval port L-35/L-36
 
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