Re: 13-1/2 to 1 compression ...on the street?

"M.Burns" wrote:
> 
> Looking at a nice Pro Street car with 13.5 to 1 compression pistons.  It
> apparently has been at some statewide cruises, rod runs, etc, so I know
it's
> been driven. My question is, what kind of fuel must the owner be running
for
> the engine to survive. Heard claim that by retarding the timing
somewhat,
> pump gas with octane booster works(?)  Race fuel?  Any ideas  (...from
guys
> familiar with similar cars or situations). Thanks

#2 diesel?