Does the dyno have EGT's for each cylinder? If so what are they? Did anything respond when you jetted up at all? (Plugs, egt's) if nothing responded at all to the larger jets I would bump the float levels up say to 3/4's glass maybe a touch more. I know they say with the new bowls it's 1/4 glass but I've found that to low and above half is where they need to be. That carb should be no-where near lean at that horsepower/rpm level. I'm not trying to discount your friends tunning expertise in any way just some ideas from what I've seen. If you bump the floats and no response send the things back cause something is way off...

Can you post what the tune up is . There's a lot more than just a main jet change.

Tim,
What ended up happening with the dyno runs?

Well...when the "wizard" at QF assembled this card...it was to have a pait of 73 "jets" behind the Power Valve......After beating by head agaist the wall lonbg enough..I dissected that Carb and found he put BLANKS in it! (and one wasn't even tight(! Hard to pass fuel through those when the PV opens! I take the carb of the second engine, pull that one down...at least he put 68's in that on?? WTF! I also borrowed a Wide Band O2 sensor (that verified my BSFC #'s btw) Were up to 765 now...gonna bump timing and add fuel in a couple hours Its a "grunter" 563ft lbs torque at 2000rpm! Should get up on plane?!

I used water dyno haha

Glad I didn't just bolt these in and run across the Lake...would of melted the engine with the f'd up carb for sure!

Crazy mine were right on...

So, your PV Channel Restrictions 'jets' where solid ?

Damn.....

The other wasn't "too" far off...but the AFR was 12.8...pushing 13 and BSFC came down to 440ish still a tick lean...first pull today will be with a "fatter" tune and if all looks good..finally bump timing..glad I had that backed down on that first carb! I a "newbie" to the Water but this isn't my first rodeo in the Dyno room Built many 3,200hp engines....havnt touched a carb in 25 years though

YEPPER! How F'D up is that...PV BLOCKED!