Thread: Cranking compression
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01-11-2004 09:38 AM #1
CHR Member
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- Dec 2003
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- Chwk
- Car Year, Make, Model: 86 S-15 Jimmy sb 400
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Cranking compression
I am just wondering, I am working on a 400 block and with my current calculations, 12:1 compression with aluminum heads. We are installing a large cam,
http://www.compcams.com/Technical/Se...umber=12-225-4
and I am wondering if anyone could tell me what the true compression would be when taking into consideration the over lap bleed-off.
Or, if we end up with 200 psi cranking compression, would 94 octane be adequate to avoid detonation?Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.
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John's ride to the cemetery, his beloved Billings OK bus, The Baby Elephant!! Traveling in style!! - -
John Norton aka johnboy