Why?

[Tim Rogers]

Jay Stewart wrote:

>>The discussion was advanced timing + 87 octane. So, yes.

Yes, but only advancing timing within stock specifications (15* +/- 2* =
17*) and the stock specs for the gasoline require only 87 octane.
Of course, this assumes that everything else in the engine is running
correctly: no vacuum leaks, good O2 sensor, good ground on MAF, etc.
When you get to this point, maybe 89 octane would be good for a little
insurance, but the 91-93 rated stuff would be a waste of money.

Tim Rogers
-93 NX T-top -needs wiring work
-91 NX - Racecar-to-be
-75 Silverado - Rusty Tow Beast