Dipstick checks o.k. (not milky)
Engine did not lose power or smoke (also no burning smell when truck stopped).
I too four of the plugs out when attempting to turn.
With this being a 97, would it just about the same to replace the engine or the entire truck?

 

Glc is here he probably has some good answers.

 

Being new to this site, can you clue me in to what that means?

 

He made the last post on the first page.
He asked which engine.
He is knoledgalble on htese issues

 

Sorry that I did not see your post.
It is a 4.6 SOC V8
Thanks!

 

I think the question was what engine do you have? 4.2 4.6 or 5.4?
It sounds to me like your in a solid seized situation. Trying to get it to turn is a waste of time. Sounds like you have proven its toast. Start looking for another engine.

 

O.K.
Should I be looking for a full engine replacement or fix what I've got?

 

If the engine is truly seized, I'd look for a good used engine in the boneyard or get a Jasper rebuilt. Pull the plugs and it should turn over easily with a wrench on the crankshaft pulley bolt.

Reason I asked which engine is - the 97 4.2 V-6 had known gasket problems that lead to a hydrolock.

 

With the oil presure drop you descibed, it does sound like it is dead.
Give it a decnt burial.
How many miles did it have?

 

Before assuming the engine is seized, remove the serpentine belt and check again.

I had my AC compressor clutch seize and it locked the engine up exactly as if the engine itself were seized.

Steve

 

Thank you for the suggestion-
Tried it yesterday, didn't work

 

dont mean to hijack your thread, but i am having the same problem with my 2003 4.6L v8 triton 4x4. I did buy the truck at an auction as a water damage, and i'm trying a rebuild/restoration. The truck itself is in very good condition, but i am have a time trying to turn the engine manually. I get rotation to a certain point then it is jams, rotate back the other way for a bit and jams again. On starting with the starter (all plugs out) she rolled over for a few bumps of the ignition (a good bit of water shot out the cylinders). I wanted to get a few good turns manually before damaging something. I was thinking about removing the serpentine belt as well to possibly eliminate any other accessory pulley causing the hangup. I really dont want to go the bone yard engine route if i can have this engine rebuilt. Any professional advice or tried and proven experiences to share are appreciated. I also drained all fluids that were contaminated with water (fuel, rear, trans, motor oil).

 

You should start a new thread. Your in a totally different situation and should bring up a new topic.