I really can't remember right now as it's been a little while since I put a tach to it and had to send the engine back to YS to get a new head/ring installed since it dropped the exhaust valve

I do remember it turning the APC16X6 at around 8500 sloppy rich so it's a safe bet that it was close to that on the 17X4.

If I can get hme early enough sometime this week, I'll take it outside and fir it up and get you those numbers