Quote:
Patrick & 64 Post and anyone else who is not as mathematically challenged as I,
What are your suggestions?
Frank 
you are fine. should make a great street motor, should be strong from 1500-5500 RPM. I'd expect the power to peak below 6K RPM. it probably will run on 89, will definitely run on premium.
there's guys with KB107 equipped 360 shortblocks and magnum heads with tight quench (~10.6:1 comp, with iron heads) running comp XE268's and running on premium, can get by with 89 without an overly aggressive dizzy timing curve.
granted, the smaller bore helps slightly with detonation resistance, too...
anecdotally, a friend has a stroker LT1 in his impala SS, 396", with a 230@.050 duration comp hydraulic roller (probably in the 280 adv range), and 11.7:1 measured static compression, and he runs ok on pump premium. it's a little finicky, as the computer sometimes pulls a little timing out on warm days if he fills up anywhere but the shell station that sells 93 octane....
plugging the numbers in on his combo to the K-B DCR calculator, I get a DCR of 9.4-10 depending on using .006 vs. .050+ 15 ICP....granted he has better fuel/spark control running a EFI....
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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