in the owner's manual???
I lost mine, but check again. I'm almost postive it says 87 for the V6 and GT, and 93 for Cobra.
I have a 94 GT, and 87 worked fine with stock timing.
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Elisha (Mustang Chick Extraordinaire)
1994 GT/Saleen: Cartech intake,4.10s, full exhaust, pulleys, Compucar nitrous kit 125 shot
Sold the 1986 LX sedan
http://www.geocities.com/mustangbelle_306
AOL name: GT306Chick