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. |
ive heard perhaps the best stock iron bbc heads made for racing is the 990 head then the 840...not sure but id say you have a head worth keeping for a good street strip head good luk
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Ya I will be keeping these,I have them on my Blown Pro Street 57' thats in Show Off. But I'm very curious what they flow.
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