ZZ572 89 octaine?
#11
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Joined: Oct 2000
Posts: 1,382
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From: Spicewood, Texas USA
You could probably open the combustion chambers up some and knock several points off the compression ratio. I've run a 555 with 9.3:1 and aluminum heads on 89 octane. It actually seemed to make more power than with 93. Probably wouldn't loose a measurable amount of HP.
#12
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Joined: Dec 2004
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Originally Posted by bobl
You could probably open the combustion chambers up some and knock several points off the compression ratio. I've run a 555 with 9.3:1 and aluminum heads on 89 octane. It actually seemed to make more power than with 93. Probably wouldn't loose a measurable amount of HP.
You guys are great .I have been getting way to stressed out getting an engine sorted out ,There is hope for this factory stroker yet .




