One header pipe HOT,,,others NOT...

inertia said
which cylinder,, I'm guessing #5 or 8.. modulator hose???

It's #6...3rd one back on the pass.side. Mod.hose is hooked into the full-time port on the baseplate of the Holley carb.

He's got a wideband 02 sensor on that bank and it says the things' lean all the time, even though we've jetted the primaries up 2 or 3 sizes.