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On each side of these 799 heads I have there looks to be a broken nipple from the block off in each side of the head. I just had them sent out to be cnc ported and when they came back they still had these pieces in them. Is this normal or did they forget to extract them? Also how shall I go about getting them out of they are indeed stuck in there? Thanks
GM bolts a block over the steam ports with a nub that pokes into the hole. If that nub is broken off in the head like that and you don't fix it, the nub can come out and cause a leak.
With the head off the engine, you should be able to knock it in then shake the head until it drops out.
GM bolts a block over the steam ports with a nub that pokes into the hole. If that nub is broken off in the head like that and you don't fix it, the nub can come out and cause a leak.
With the head off the engine, you should be able to knock it in then shake the head until it drops out.
Ya but thats not what this is lol. New casting heads have a plug pressed into them like the op's. Its not broken thats the way they come from gm I've had a few sets of heads like this. They're ready to go unless he wants to add a crossover. Gm stopped using coolant plugs like the one in the pic quite a few years ago and just did things this way
Cannot thank you guys enough!!! I tracked down a brand new pair of 799 and they were plugged so these are going to stay as is. Do appreciate all of the feedback!!
If these were pushed out in motor with heads on can the pins be removed out the water pump or what how? Thinking of doing this to mine when I found my heads were like this any suggestions.
If these were pushed out in motor with heads on can the pins be removed out the water pump or what how? Thinking of doing this to mine when I found my heads were like this any suggestions.
Are you sure it's impossible? Where will the pin plugs drop to if pushed them in with heads on car I might can push it through but will I be able to get them out? Anyone have some input on this.
Last edited by Robert Cantu; Feb 9, 2015 at 05:22 PM.
Are you sure it's impossible? Where will the pin plugs drop to if pushed them in with heads on car I might can push it through but will I be able to get them out? Anyone have some input on this.
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LS head coolent blockoff broken inside 
