Fuel?

[xxtrizz]

I was reading up alot about making a high compression N/A engine and was curious as to whether making the compression like 10.7 at a .020 overbore would merit 93 octane? Or could I still use lower octane?

If I had to use 93 octane could I upgrade the ignition system to go back to burning a lower grade of fuel? Or is that high of compression even streetable with anything but 93?

[deviousKA]

You will want to run at least 92 or 93 octane, if you want to stay at a stock or advanced ignition timing.

You can run lower octane fuel if you retard your timing, by just turning the distributor. This obviously lowers the performance. It would definately still be streetable, just not put out its full potential.