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Originally Posted by cody
I assume dog engagement included straight cut gears. For $4900, it should. 
The fact that the ratios are changed is a dead giveaway that the gears are replaced. Could you even have dog engagement with helically cut gears?
Edit: just saw your edit.  I don't know any specifics about this set, but I'm going to assume that the straight cut PPG gears are stronger than the stockers. They are really nice gears from the reviews I've read. |
PPG are pretty popular w/ the drag crowd, so I assume their gearsets work well. Also, I believe they sell both straight and helical gears, dog engagment doesn't reqire one or the other...
Straight gears hold more power and avoid the thrust issues associated with helicals, but they make an assload of noise... you know that "whine" in reverse... imagine if all your gears did that! But, the dog teeth are in the side of the gears, so it doesn't matter what the tooth profile is.