"CFster" wrote in message
news:SISZf.5864$IZ2.51@dukeread07...

wrote in message
...
compression ratio on new engines is 8 to one or less to burn regular
octane gas,..

http://www.minibite.com/america/malone.htm


Not entirely true. A lot of engines are over 9.5:1 these days.

The reason for this is aluminum heads - you can run several points more
compression and not worry about spark knock.

-CF


Actually, I know guys that run 11:1 compression with aluminum heads - and
run 93 octane no problem.

-CF