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'78 K20 - RootBreaker from 1990 - nov 2025 8.1L not runnin

wow truck drove in.. really nice.. yeah I got a good deal but parts of it are annoying.. like how long I had to wait. then he said 02 sensors but 1 is smashed and 2nd is not there.. I don't see the wires.. so were they cut? harness was supposed to be good but then accidentally rips it upon removal so cut it out... blah blah... etc... oh well... it will get there...
I payed 3k and it took a couple days to carefully dissect without damaging anything but I have everything including a disc brake 14bff for the k5 haha. Hopefully you can sort out what's missing but like I said I'll have a good harness at some point
 
wow I was in an 8.1 group on FB.. and was talking back and forth on my new to me purchase and we got talking like what happens.. someone said my sbc flywheel wont work and he has done these swaps. said a 1989 and older sbc will.. so I politely said.. on pirate a guy (and I gave the link) said he bought the 8.1L flywheel and put it up to his sbc and wow a total waste. they are the same.. so the guy replies..
like I said....
so I replied and said..
I know you've done these swaps so I totally appreciate all your responses and not trying to be a d1ck... (think that is what got me kicked)...
 
wow I was in an 8.1 group on FB.. and was talking back and forth on my new to me purchase and we got talking like what happens.. someone said my sbc flywheel wont work and he has done these swaps. said a 1989 and older sbc will.. so I politely said.. on pirate a guy (and I gave the link) said he bought the 8.1L flywheel and put it up to his sbc and wow a total waste. they are the same.. so the guy replies..
like I said....
so I replied and said..
I know you've done these swaps so I totally appreciate all your responses and not trying to be a d1ck... (think that is what got me kicked)...
Pirates.
 

I don't get it.. they bash people all the time and I was simply stating I wasn't arguing.. guess I should of said it that way.. but they could of also given me a warning... sheeze.. some are just too up tight... they must be pirates with pinky out sippin their kool-aid
 
So brittle.. wish life had something easy... little pressure and snapView attachment 275980
Ah shit. It's about 5" long and goes Strait down. There's only an Orting holding it in besides the bolt. I dunno what to try maybe that wood screw and slide hammer? Or drive down around the edges until it loosens maybe
 
I've heard of those breaking like that too. When I took mine out originally it was hard to get it to "pop" out. It does just slide up and out...it's probably the little rubber seal still holding it in...gotta somehow get it to pop up and out
 
I've heard of those breaking like that too. When I took mine out originally it was hard to get it to "pop" out. It does just slide up and out...it's probably the little rubber seal still holding it in...gotta somehow get it to pop up and out

story of my life man.. anything that can go easy... WONT...
need a bigger hammer, drill, more tools... ill get it!!

thx for confirmation that it just slides in. when looking at the new one. wasn't sure if you needed to "Turn" it a few degrees like a slight key to it..
 
Ok got it..
Tried slap hammer but kept breaking plastic. Eventually chisseled out top to show o ring and pried it out.

Rear main in and crankshaft sensor

20180906_183710.jpg



So does anyone have a clean pic of wires going under front? This is so nasty that i will clean it but would love to visualize it.... last part b4 harness is off...

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20180906_183737.jpg

Ill most likely cut ac belt and remove ac... then i can get in there more...
 
Now that im lookin.. harness held to that plastic via loom clips that push through? Thats for tomorrow... time to chill ..eat..grab a beer and getready for football
 
Just doin things as im bored. Just walked out in garage to grab a beer. Grabbed rachet and took ac comp and bracket off. Wow that takes ton of room.... now i can see the nastiness... lots to clean...

20180906_224655.jpg


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So for egr.. ive never worked on it.. do i remove it all including the louvered piece at top?

20180906_224725.jpg
 
Just doin things as im bored. Just walked out in garage to grab a beer. Grabbed rachet and took ac comp and bracket off. Wow that takes ton of room.... now i can see the nastiness... lots to clean...

View attachment 276078


View attachment 276076


So for egr.. ive never worked on it.. do i remove it all including the louvered piece at top?

View attachment 276077
Yea take it all out of there. I deleted the part# for the block off plate and gasket though. Larry has it I had to power wash mine on the stand it was the same way
 
Yea take it all out of there. I deleted the part# for the block off plate and gasket though. Larry has it I had to power wash mine on the stand it was the same way

its interesting that I see Larry's and it is just soooo clean!!!! hah.. this thing is like a fat boy at a china buffet on a 10 minute lunch break! nom nom nom.. messy
 
Yea take it all out of there. I deleted the part# for the block off plate and gasket though. Larry has it I had to power wash mine on the stand it was the same way

yeah thought I saw it there... found it..

so I added to my pg 13 pricing list... and they are ordered. ive got time so didn't care of finding it locally for now...

12559976 EGR Cover - thatgmpartsguy.com - $7 - $4 ship
12580673 EGR Cover gasket - thatgmpartsguy.com - $5
 
man did that engine come from upstate ny ? my area . . . she sure is chunky :doah:

i should snap a pic of my old plow truck 350 show you what they look like up here these days . yours is cleaner but not by much .
 
man did that engine come from upstate ny ? my area . . . she sure is chunky :doah:

i should snap a pic of my old plow truck 350 show you what they look like up here these days . yours is cleaner but not by much .


Farther up... keep going... Maine...
 
my build thread will never get as good as others. It is going to start here... trying to work on my marriage.. truck is going.

truck and 8.1L will go up for sale...
 

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