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Discussion Starter #1
Recently I did a head swap on my 98 gt and have been playing with my timing adjuster. Today I figured I would be stupid and bump it up to 18 degrees for the hell of it....Well no detonation at all and it feels great ?????? can this be possible? It feels better than the 14 that it was at. Im using 93 octane pump gas.

Whats the highest timing anyone has heard of running on a headswap engine and making good power.
 
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