Originally Posted by crossbolted
Ok guys, I'm working on a 350, 64 cc alum heads, forged piston etc...Putting values in "Patt Kelley" 's calculator, we got 9.27 for DCR , same number with KB's. KB's also gives 9.98:1 for SCR. Are these safe with pump gas (max 91) or we need to lower this?Any ideas appreciated..
Not knowing any more than this, I wouldn't run a 9.3-ish DCR on 91 octane. But hey- what do I know.