richingalveston
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I believe you need 91 or older heads. They changed the angle of the bolt holes and the newer ones will not work
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Here is my understanding, please chime in if anything is inaccurate. 6.2 and 6.5 heads are interchangeable with the following considerations:I wish I could help more. That is what I found. I never heard of 6.2 diesel heads being different. But I do NOT claim to know all about this subject. I looked at several sources and they list them for a 1984 K30 with a 6.2. They are going to be the ones to get. I would not be afraid of heads made in Canada or China. I get parts from all over the world. Unless you ask many times you don't know where parts are made. Many times it don't matter. I buy brand new GM vehicles that have parts made all over the world. They work fine. I am just not as fussy about where things are made. I have more concerns about fit and function. I have a 22 year old Cadillac and the speakers were made in China when I removed them. World market. Free trade I guess. I thought NAPA sold new heads for the 6.2. I know Autozone did. i had a friend buy a set a few years back. He is still plowing snow and hauling dirt with his K30. Good Luck. I think I will hang onto my crate heads. They mean more to me then the new ones are selling for. The crates would make a nice table top for the man cave.
But how are they evenly tightened if they are not the same torque spec?Because they are torque to yield bolts and that way they are evenly tightened and evenly sealing and compressing the head gasket. Also you must follow the correct torque sequence.
3ft lbs?I thought there were 3 Ftlb torques and then the 1/4 turn. I did hundreds of 6.2 heads and it is easy to do the 1/4 turn. Much easier if the engine is out of the vehicle. But still doable in the engine room. And make sure you replace the head bolts. Do NOT use them over. You will be wasting your time on the whole job reusing the head bolts. Good Luck.
Yeah, oreily is supposed to have me another gasket in the morning, at least better than 3 days from amazon. Just a 60 mile round trip...Sorry to hear that. I know the heads never got any heavier but as I got older they sure felt like it. And under the hood. I don't do that alone anymore. Sorry for your misfortune. Good Luck. Get a helper or cut the head off of 2 old head bolts and finger tighten them as alignment rods. just a thought.
Have you looked closely at your motor mounts? Description your giving sounds like the motor mounts are sunken and worn out. Changing heads is Not my favorite thing to do under the hood. But I never had to cut away at the cab. Report back your findings. How close is the dipstick tube stud to the frame? any tell tale signs of the stud chattering against the frame in that area?
it is pretty easy to get the inner fenders out. With jack stands and front tires off and inner fender out (battery's and trays have to be removed) you can stand next to the motor.
outer fender comes off easy also but not necessary. On drivers side the brake lines and booster are in your way some but it is better than breaking your back bending over the fenders.
If you have a bunch of rust then you may not want to go this route but if the inner fenders are in good shape it is only a few bolts.
also check motor mounts and jack the back of the tranny up.
good luck
Rich
Yeah, at this point, I wish I had just went ahead and pulled the engine.As I grew older I grew smarter in some aspects. I now remove the engine to do any type of major work. I consider head gaskets major work. it is so easy to remove the engine and change out all the seals and gaskets while you are in there. I still change rear main seals in the truck but heads and head gaskets the engine comes out. I mean if you are going to take the inner fender aprons out. It would take less time to remove the engine. I can have an engine out of a CUCV in about 3 hours. As long as the engine is not HOT. Then even then it just takes a little longer to work carefully. But If the engine is out the motor mounts can be changed and even with no motor stand everything is right in front of you. I sit on a folding chair and work on the engines with a table next to me for tools and refreshments. Try that under the hood. I changed my share of heads under the hood. No More. It opens up so many opportunities to clean and repair and only cost $100. for all the seals/gaskets and a little or same amount of time. Good Luck.
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