Idle MAP vs CAM size

[Sinister]

Thanks. I am getting there. I have a few issues they are trying to help me with in another thread.

[krisr]

I've got the 224/230/114 XER273 cam in my LS1. I can get it to idle well between 45-48kpa @ 850rpm (M6) @ 14.68 AFR, the trick was to give it about 20° base timing. It idles noticeably rougher at 15° even at 900rpm.

[Rhino79]

Im running a mast vvt cam, 230/244 on a 111 lsa, idle map is around 75 -78 kpa at 850 rpm.

[Jester]

Comp 231/237 112LSA XER lobes, 60-61 kpa @ 750rpm (M6).

[O1Z06]

This thread helped me out to verify as the op intended. Thanks for everyone's input.

My idle is at 68.5 kPa at 900 rpm at 25*. Engine specs in sig, cam specs are: 237/251 115+3 .610/.632 1.7 rocker ratio