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pinkiedog64
 Post subject: cc'd the head...
PostPosted: Sat Jun 28, 2008 9:58 pm 
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Location: Kerrville, TX
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I cc'd the head today. I did two different holes and both came out to be about 45-46 cc's. The head has been milled .100" and has big valves. I'm not sure what average or common numbers are, so I was just running them by you guys to see what you think. Does that sound high, low, average, etc?

Also, I found my old compression numbers from when I first got my truck several years ago. They ranged from 112-123 psi. What are they supposed to be? I guess it doesn't matter now that I'm rebuilding it, but I am just curious.

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70valiant
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PostPosted: Sun Jun 29, 2008 4:43 am 
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Turbo EFI
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Location: Southeastern Pennsylvania
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My head might have been milled before or maybe the took off more than the .100 I asked for but my chambers are 39cc's. My static compression now is in the 165psi range. I believe 130's are new stock?

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Charrlie_S
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PostPosted: Sun Jun 29, 2008 5:36 am 
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My head might have been milled before or maybe the took off more than the .100 I asked for but my chambers are 39cc's. My static compression now is in the 165psi range. I believe 130's are new stock?
I had .100 taken off the head on my valiant. This was an old "blueprinted" stock eliminator head. The head had been milled previously, but could not remember how much. I would guess about .020-.025. So the total would be about .125, and it cc'd at 39

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Charrlie_S
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^ChYmAiL^GTX
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PostPosted: Sun Jun 29, 2008 11:53 am 
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4 BBL ''Hyper-Pak''
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I have 54cc now in a STD head i´m working on... does anybody know how much should i grind of the reach 42cc?

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Charrlie_S
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PostPosted: Sun Jun 29, 2008 5:22 pm 
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I have 54cc now in a STD head i´m working on... does anybody know how much should i grind of the reach 42cc?
54-42=12 x .0066=.0792

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Charrlie_S
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^ChYmAiL^GTX
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PostPosted: Sun Jun 29, 2008 6:55 pm 
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Thank you very much Charlie.

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dakight
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PostPosted: Mon Jun 30, 2008 4:54 am 
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Quote:
I have 54cc now in a STD head i´m working on... does anybody know how much should i grind of the reach 42cc?
54-42=12 x .0066=.0792
Where did you get the .0066 factor?

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DusterIdiot
 Post subject: Doc...
PostPosted: Mon Jun 30, 2008 5:43 am 
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Where did you get the .0066 factor?

It's in one of the articles that Doc wrote...

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Charrlie_S
 Post subject:
PostPosted: Mon Jun 30, 2008 7:18 am 
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It is also one of the correct details in the Mopar performance book.

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Charrlie_S
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dakight
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PostPosted: Mon Jun 30, 2008 12:39 pm 
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Cool, that'll help me when it comes time to get mine milled. Thanks!

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