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  #31 (permalink)  
Old 06-30-2005, 11:34 PM
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Originally Posted by lluciano77
He put a bigger turbo on then the original. It was running low 11s.
Wow, Can't belive what I see.
We are talking about compression ratio not times!

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  #32 (permalink)  
Old 07-01-2005, 04:35 PM
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i have a 406,10.5 c.r. and wanted to be able to use 87-89 octane because i figure it will get worse before it gets better so i built another 406 with 9.4 c.r. 64 cc combution chamber and a magnum 280 comp cams 1.6 rockers at 512/512 lift and am running 87 octane.runs great if this helps.i think you should increase your c.r. some to about 9-1. to run that may just have to try it.
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