Russ, the jetting increased 7 jet sizes in both putboards and both sides. We left the 64s in the center. The last pulls with each manifold was to 6000 rpm. Peaks seemed to be well below that. And this was with their 1-7/8” dyno headers. Tubes come straight out wuite a few inches. I’m sure it would have killed a bunch of power if it was run with factory ex manifolds, like you ran.
Thanks. As shown in my previous post with the attached PDF, my jetting was less than your's on the 6 pack. I was running at about 13.0 on the A/F on that run. All of my best 4 bbl runs were recording A/F more like 12.3 to 12.5, so my 6 pack set up might have been a little lean in hind sight.
I pulled mine to 6000 too. I wish that I would have gone to 6300. My numbers were so flat from 5100 to 6000 that the "peak" power would change from 5300 to 5900 rpm on back to back runs with little or no change. I think its because of my cam. Just curious as to how your power tracked after peak.
