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I finally had time to at least get the heads installed today. I used the paint on the socket and head method as you suggested but I didn’t use an impact. I used a long ratchet to get it done. It will be a week or two before I can start installing everything else.

That sounds like a plan for the hard to get to bolts. Thanks.

Thanks, I guess my OCD is giving me some trouble with this. I like torque wrenches, no guessing. I ordered a torque angle adaptor in 1/2" drive but the head bolts closest to the fire wall may not allow the use of it. I guess I could mark the head of the bolts and make a best guess but I hate to...

While we are on the subject of head bolts, what do you use to be sure you get an accurate 90 degrees rotation on the last turn of the head bolts when you are torquing them down? My torque wrenches are for ft. lbs., they don't do angle of degrees. Another question, do you do the 20 and 50 once or...

Great explanation! Now I have a much better understanding of how it works. I did not notice the smaller coolant holes above each cylinder. Thanks.

The AC Delco didn't come up with a fuel pump any more but 6471831 did come up with a pump that looks like it will work. It even has the return spring I read it should have.

I am trying to find the correct part number for the mechanical lift pump to put on my M1009 as it has an electric pump. I found Delphi CHFP906 on this site but when I search in internet I only find HFP906. Are these the same or different? In addition, If I were to leave the electric pump in...

It sounds as though the original may be reuseable, but the new bolts are cheap. I am putting in new ones. Good info though.

I have the heads from my 6.2 at the machine shop getting fixed. they are warped 0.004". The shop thinks the engine likely was overheated to some extent. I don't know enough about these engines to diagnose the cooling system but I bet people here do. I did notice both the block and heads have six...

I have ordered new head bolts. I see no reason for studs on a stock engine. along with the gaskets. I wanted ARP bolts as I have always used them on gas engines but I can't find any so I ordered Felpro. All the gaskets are Felpro as well, as that is all I have ever used. It does not appear that...

I dropped the heads off at a machine shop yesterday. They called a while ago. There are no cracks anywhere in either head, good news. They are however, warped 0.004". Not too bad. They are going to take off just enough to get the heads flat again. They also said all the pre-chambers need to be...

Now I have another question. I was moving the heads around on my workbench taking sensors, block-off plates, injectors off and one of the pre-chambers fell out. I thought they were pressed in? It literally fell out on the bench. It came from the driver's side head, second from the back. I wonder...

Thanks for the info. Are the FEL-PRO 8726PT gaskets the good ones everyone is using? I thought there was a blue Felpro gasket that was being used, these seem to be grey. I am probably thinking of something else.

I am going to call a local machine shop I found on the internet to see if they have any experience with these 6.2 heads. I would like to get them checked out. Maybe they are ok and I just need new gaskets. does anyone have part numbers for known reliable head gaskets for these engines? What...

I have the heads pulled off now. The engine has the PrintOSeal head gaskets in it. Are those the head gaskets I have read are not reliable? I do not see a single one of the dreaded cracks in either of the heads. At least that may be good news. The way the head gaskets came apart I don't see an...

I have another question. Did the injection pumps have the bar code tags on them in 1986? I don't think so.

Do people use any kind of thread locker when putting these back together? It seems as that they should have something. Is the compression of the gasket enough to keep the bolts tight?

I started to take the top of the engine apart and looking at it I am wondering if it has been apart in the past. It doesn't seem like the intake manifold gaskets are OEM to me. What do you people think? They are surely leaking. I am guessing except for allowing dust to get in it doesn't really...

I thought about doing that but decided against buying a bore scope to look and just pull the heads for the a couple of reasons. I don’t see any evidence of blow-by. I have no smoke out the exhaust, either side. I don’t see any sign of contamination in the oil. The engine does start and run good...

Normally I would but the heads are coming off anyway. I was hoping one of the cylinders on the driver’s side would be way low showing a bad head gasket but that didn’t really happen. I think maybe a bit more indication the driver’s side head may have a crack into a cooling passage.