Originally Posted by B1MAXX
I used that single plane on a 360 build with stock heads, 8.5 to 1 cast pistons, and a 268 cam, with a holley 780...


Fair enough...but that cam has a pile less duration than what I was running, which means that my vacum signal (which was about 6-7" @idle) was most likely a lot weaker than what you were seeing, thus impacting my off-idle response as well.

I get the idle feed changes (went through all that on my Carter TQ, numerous adjustments which I am comfortable stating all had the desired effects I was looking for), but at the end of the day, for my combo the RPM unit just delivered more of the bottom end I was prioritizing at that time.

Great point though for the OP, it all depends on how the individual components all come together and how they either add to, or detract from your intended goals!