Quote:
Originally Posted by Si Coe
You don't want an x12 though - not if you are running timing advance. They run so much timing as stock they just don't like it. However, if you are running fixed timing (0 timing) class, an X12 might be an advantage.....
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Not true at all, the X12 holds the lap record at my track in 10.5 boosted and is one of the most popular motors. It's a very powerful motor and superb in any class/wind.
The GM is also very good. In all honesty you'll be happy with either motor, they're two of the fastest out there.