Also BBC 840 head flow data

Old 01-06-2009, 11:29 AM
  #1  
nofear57
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Default 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.
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Old 01-10-2009, 07:12 AM
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russ67chevelle
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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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Old 01-11-2009, 06:43 PM
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nofear57
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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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Old 01-27-2009, 03:50 PM
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henny
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Hello
There are quite a few BBC heads on here

http://users.erols.com/srweiss/tablehdc.htm#BBChevy
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