I could see different bank to bank AFR on a long ram as it basically turns the engine into two four cylinder engines. Getting 2 carbs to make identical fuel curves on what is effectively 2 similar but separate engines would be quite a challenge.
I don't think the balance tube would make any difference to speak of on this as far as AFR is concerned at least above idle.
Kevin
Yep you would be correct, but a single plane intake only needs 1 o2 sensor.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
