QUOTE (speedracer @ Jul 17 2009, 10:16 PM) <{POST_SNAPBACK}>
Wistech,how much more is gained by running duals?I see the stock stroke machines are making great numbers.
We have been able to beat open race pipes by a couple of horse with quiet cores and over 4 horse when left uncorked. It all depends on the engine configuration and cam timing. Id keep the cam timng closer to stock for quiet cores and retard as much as 6 degrees for open duals.