This has probably been discussed here before, but I couldn't find much on it by searching.

Newly rebuilt 429 w/holley 4160 carb is only hitting on cylinders 1,4,6,7.
1. pulled plugs 2 & 8 and they are clean and dry, no gas or gas odor.
2. pulled plugs 1 & 6 and they are black like it is getting to much gas.
3. checked to make sure plug 2 was getting fire and it is.

Where can I find a diagram of the fuel flow of the intake manifold.

Any suggestions or ideas will be greatly appreciated.

Thanks
Vern