water in cylinders

Cracked heads

I am thinking if the intake itself had cracked, there would be water in the oil. Since the water is in adjacent cylinders (on opposite sides obviously) then I too would look for cracked heads, or bad gasket, ,and worse yet a cracked blok, but that would be least likely in your described case. Last time I saw a cracked block, it was either because water froze inside it, ,ant it only effected one cylinder

Hey...if they are bad, you can do that performance upgrade you always wanted to do...and now you have a reason!!

My truck overheated the other day. after i let it cool i poured>

Sounds like a leaking intake manifold gasket, Chevy v8's use water passages in the manifold, a leak would blow water into the valley, and should show up in the oil, drain oil to verify water / no water, in oil. When I do a Chevy, I gently torque down the front and rear water passage bolts, than I follow mfg. torque sequence and spec. I use Permatex # 2 on the water passages, and let the motor sit overnight after final torquing, before filling cooling system