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?