CAUTION!!! Any fuel with lead (
Tetraethyllead) will WRECK your catalytic converters and O2 sensors.
http://en.wikipedia.org/wiki/Tetraethyllead
Most race fuels that are over 100 octane R+M/2 will have lead content.
If you want to try race fuel and not damage your emissions system;
look for a "street legal" UNLEADED race fuel.
I have ran Chevron/Phillips TT100 fuel in several emission controlled vehicles with good results and no damage to emissions hardware.
http://www.cpchem.com/bl/specchem/en...lications.aspx
There are several other manufacturers of "street legal" unleaded race fuels.
However Chevron/Phillips TT100 is the only one that is easily available in my area.
Thomasville North Carolina at the Kangaroo station of all places!
Probably not a lot to gain over 93 octane in a stock SS with race fuel unless you are tracking it.
In a track situation the controlled distillation points and other desirable characteristics of race fuel will give more consistent performance Vs: street 93 octane.
There is a point of diminishing returns on the street with increasing octane in a stock vehicle.
93 octane is generally sufficient unless you have forced induction or increased compression ratio above stock.
Of course I am referring to vehicles with modern engine control computers in the above statement.
Good luck sir.
Rickey.