Intake distribution issues

Question for the intake gurus, sorry if it's a long post guys.
Engine I'm working with is 360 60 over, stoke stroke with 273 rods and speed tec pistons, 11.2 comp. Cam is hr 530/536 230/234@50 110lsa, Heads are promaxx cnc'd and milled to 60cc with 2.08 1.60 valves. M1 intake unported. Holley sniper efi.

Problem I was having was once around 2k and up afr was going crazy and missing and popping thru exhaust under light excelleration or even steady cruising unless you went from idle to full...

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Author: admin