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I made 351 with a stock port at 16lbs, with a fairly rich tune. I gained 8hp by leaning it out from 10.5-10.8. It should be making 360+ since I leaned it out to 11.1-11.2. I just didn't feel like pulling it on the dyno any more that day. I need to mess around with the timing, I may do that this summer sometime.
I think max on the twins with a street port is is around 430hp+ non-seq, and 410-420 seq?? Bryan should know.
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