Where's my leak ? .....

Some of the attachments for the intake are studs and others are bolts. If he got a new head he would have had to transfer all of the studs from the old head to the new......if that wasn't done exactly they as they were on the stock head, then you may have found your problem if it is indeed the intake leaking coolant. There is one spot where coolant passes through the intake manifold and it is located to the rear and bottom of intake runner #3 where the intake bolts to the head. If I recall correctly, the intake has a nipple on it where that coolant passes through it and there is a small coolant hose that attaches there and runs up to the throttle body.
I went out in the garage and shot a few pics of the new head I have that will be on the engine I'm rebuilding at the moment. This way you can see where the intake studs are supposed to be in the head. I will post them here in a few minutes.

OK, here they are!
The studs on the intake side of the head are all on the top side of the intake ports, all of the bottom threaded holes are supposed to be for bolts that go through the intake and screw into the head.







The #3 intake port is on the right in this picture......see the small hole to the bottom left of that #3 port? It is the only place where coolant enters the intake manifold.



A close up.



The exhaust side is all studs and they are all the same length.







This small stud on the rear of the head is supposed to secure the metal coolant pipe that runs around the rear of the head.

those pictures are great !
thanks!
that will make my life much easier tomorrow
does sound like he used bolts on the bottom, but not sure about stud placement

I'm sure i'll have more questions when i get out there in the morning and compare what i see to the pictures
But thanks again for posting them

i'll ask more tomorrow

Holy man !!

what feels like 800 bolts later
i got the intake off
i don't think any of the studs he used were original, or not in the correct place at least. for the #1 he used a nut over the stud before he used the bolt, because he didn't have enough thread

used orange RTV one the whole thing
looks like he reused the old gasket, sure looks like the water intake on the intake is where the leak is coming from
i'll post some pictures in a sec....

Damn.. after seeing that you might wanna pull the head just on principle! Those should be dry gaskets.. no rtv!

the head didn't look like it had RTV
but it started to pour rain just as i finished pulling the intake, so i didn't spend much time looking in the truck to see how everything else looked
i'll do that and take more pictures tomorrow

for now, i think i found my major problem
i am in the process of cleaning up the old gasket (and RTV) and getting it ready for reinstall
now it's out from the head into the intake right ?
just want to make sure i don't need to go digging for rtv in the water line of the head
i might just put the vacuum to it anyway.....

one thing i did notice, when i took the intake apart to get it out
i noticed that the top half gasket also looked reused, and one of the bolts (that goes right through) had been stripped, retapped, and stripped again
now, i can just put a bolt and nut through that spot right ?
my thought was if the space underneath was to tight for a nut, i would put in a longer bolt and a metal collar, then the nut
should still give the same torque, so i think it will be alright

more pictures tomorrow !

Yep! Looks like you found the water leak.
So you took the upper and lower intake plenums apart? I don't think I have ever taken those apart, but the B2600i trucks I have worked on were still mostly factory original and had not been messed with much.

My gasket kit came with both
so i figured i would
did make it a lot easier to get to all the bolts and crap

i know a little about EFI, but i was wondering, what does the little hole go to/do ?
is it to create crankcase pressure ?

Uh, what little hole are we talking about?
The one that is below each intake port on the lower intake manifold?
If that's the one your talking about, I have no idea really.......I'd need to look and see where it goes on the head side, and maybe I could guess then!

That's the hole
the pictures you posted of the head, have a little rectangular hole under the intake
where does hole lead to when the head is on the truck ?