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looks like the cam is coming out.

any way to insp cam brgs without pulling cam? if not, is it possible to pull cam w/o removing heads? remove push rods and lifters do it? change bearings with engine still installed?

thx, thats what i was suspecting. i saw a schematic of a 6.2 diesel, assumed it to be the same as 6.5, smaller bore. you know where i can find a diagram of this specific engine? it would certainly help to troubleshoot.

12555506 date code on the block. i have a diagram of an oiling system from another gm v8, thought it may be similar. it shows a copper galley plug that normally seals the oil passage between the filter supply and return, but can come loose and descend vertically cutting off the supply to the...

i also appreciate all of your ideas and suggestions.

maybe 500 miles. heads were cracked, wasnt aware, water got into the oil. no idea how long it was that way before i purchased. previous owner bought at auction and never used. it was covered in moss. other than yellow gunk, inside of block looked good. these squirter nozzles, r they just a...

we replaced brgs with same size stamped. crank smooth, looked like it had just been installed. we didnt gage each as no noticeable wear. non turbo. didnt remove crank, wasnt aware of web issue but didnt see any cracks while in there but may be in there again. odometer shows 109000. we will move...

thx

and yes we are only spinning the shaft. what would the top portion of an oil pump drive tool seal?

no oil leaks present on exterior. oil filter is new. so loop the inlet outlet of the cooler? we blew thru the lines with compressed air, they were clear. when the engine was 1st started, it was a bit noisy but quieted down as oil started to circulate. when we pulled that plug to install the...

please explain non squirter.

should also mention we installed a mech gage @ the 1/4 pipe plug on the drvr side block at the rear top.

these are the conditions i encountered. oil pressure about 40 psi going down the road, no problems. next day, same route, pressure suddenly drops to near 0, fluxuates from 0 to 20, 10, 0, and so forth. noticeable power loss probably due to the extra friction. pull the bottom end apart, crank has...