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mannymen

07-21-2011 02:56 PM

GM BBC Intake ?

Are the 19131359 and 12363403 the same BBC intake manifolds?

Alan Roehrich

07-21-2011 03:25 PM

Re: GM BBC Intake ?

1263403 appears to be a casting number for the 1263406 and 1263407 intake manifolds. Those are oval port manifolds, so no, they are not the same as a 19131359.

FED 387

07-21-2011 04:11 PM

Re: GM BBC Intake ?

19 man came on 454HO crate motor---the 12 manifold came on the ZZ502 motor

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