Also BBC 840 head flow data
01-06-2009, 10:29 AM
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Also BBC 840 head flow data
I have a stock 1969 427BBC. The heads are stock Hi-Perf GM1T,#3919840,square port,2.19int and 1.72ex,closed chamber,106.8 combustion chamber.
They have never been ported and I want to keep them that way.Does anyone know what they would flow from the factory,int and ext??Have you seen any tests done on them? I can't find any info. on these heads either.
They have never been ported and I want to keep them that way.Does anyone know what they would flow from the factory,int and ext??Have you seen any tests done on them? I can't find any info. on these heads either.
01-27-2009, 02:50 PM
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