2003 Yukon SLT flex fuel 5.3L whats brand would you use? cam, oil pump, lifters, timing chain

[Summajet]

Received Gm lifters today. I am planning on replacing the water pump, radiators hoses, timing chain. I did not see the tensioner. Once i get the motor removed it will be easier to install a timing cover seal, cover, and oil pan. It will make it much easier to have the clearance to perform the torque sequence. I will be glad when i get done.......
LOL

 

[Rocket Man]

I used a rag, a lot of carburetor cleaner as well as a lot of elbow grease to clean the block and careful use of a gasket scraper. I would shy away from steel wool as I would hate to have a small piece of wire shed off and cause issues. I would add a new timing chain tensioner to your list. Not very expensive, but with over 200K, cheap insurance.

As for removing the motor, your basically down to the short block so not a bad idea to pull it. With help, should t be too tough. You can get to your rear main seal that way and check it out/replace it.

Timing chain tensioner? No such thing on these motors.

 

[Summajet]

I looked again and I did not see one. I know my 00 mountaineer did not have one either.

 

[wjburken]

Sorry, was thinking of my 6.2 on my ‘07. Sorry for the confusion.

 

[Summajet]

No worries, I did timing chain and water pump on my mountaineer and never had done it before. So far I have 1 timing chain and 2 timing belts under my belt. I am nervous on this one.
Lol

 

[wjburken]

Take your time, double check everything and have your helper confirm, if you have one. As someone said, the moment of truth is when you turn the key for the first time.

 

[Summajet]

I agree take time double check twice.

 

[wjburken]

When I replace the cam in my 6.2, I discovered my starter locked up so the engine wouldn’t turn over but the dash lights and everything else worked. Had a moment of panic thinking through everything and when my heart started beating again, that’s when I was able to track it down to a bad starter.

My wife had my 10 year old son standing in the yard with a fire extinguisher in case the thing caught in fire for some reason. Imagine the let down when the thing wouldn’t even turn over!

 

[Summajet]

I am sure it felt awful.

 

[wjburken]

Yeah, but now I have a funny story. After I got the starter replaced, just needed to cleanup some vacuum leaks by torquing the intake manifold. And replacing the PCV hose that was split for some reason.

 

[SnowDrifter]

No worries, I did timing chain and water pump on my mountaineer and never had done it before. So far I have 1 timing chain and 2 timing belts under my belt. I am nervous on this one.
Lol

Naww you're good man. 45% of building an engine is checking tolerances like your life depends on it. The other 45 is following torque procedure to the letter

Oh and 10% not dropping your brand new pistons or rods or anything else on the floor

When in doubt, then it over by hand. Especiay before you get the heads on. It should turn smoothly with no rough or grabby spots. Once you get the heads installed, turn it over some more. You'll feel compression. If everything clears when running by hand it'll clear when running for real!

 

[Summajet]

I'm going to put motor on engine on stand and reassemble. Will ensure I can get the proper torque angles on heads. Makes lining up the timing cover/oil pan.. Thinking I will Install water pump on motor before putting back in truck. Machine shop said to turn bolt on crank couple times on engine stand and will ensure as you stated it is good to go. Only thing I will not install on motor prior to installing in truck will be the intake.
Should leave enough room to get to the transmission bolts to secure to engine. Any tips on installing motor back in??

Had read to angle transmission up some so the engine could be tilted in the rear allowing it to slide into the transmission?
I read many post that stating not to use the bolts to pull the transmission onto the block as it will break the transmission housing.

 

[Summajet]

I had have researched a lot and watched numerous youtube videos. I did see a guy TahoeSteve I think. He had a good video on how pump/prime oil into the block to prevent dry startups. Mentioned removing the Valley plug on drivers side in combination with a hf drill pump and then turn crank by wrench and prime oil pump.

 

[Rocket Man]

I had have researched a lot and watched numerous youtube videos. I did see a guy TahoeSteve I think. He had a good video on how pump/prime oil into the block to prevent dry startups. Mentioned removing the Valley plug on drivers side in combination with a hf drill pump and then turn crank by wrench and prime oil pump.

Melling has a video on that too.

 

[Summajet]

I will check that out too. Hoping the Jegs engine valley plate comes tomorrow. Makes it easier to get clearance up against the firewall when removing and installing.

 

[Summajet]

I received Jegs plate Thursday. I got motor out midday today and started cleaning it up. The harbor freight 1000 lb engine stand works great. Jacked up transmission and it came loose and took time getting it out

 

[Rocket Man]

I received Jegs plate Thursday. I got motor out midday today and started cleaning it up. The harbor freight 1000 lb engine stand works great. Jacked up transmission and it came loose and took time getting it out

View attachment 228924 View attachment 228925

Nice. I’d love to build a motor from start to end. Someday.

 

[Summajet]

I'll trade you. Not something I wanted to do. But considering cost and labor for install something I have to do. Shop time of 21 hours at min $125 totals $2,625 in labor. I get it cost money and shop insurance, tools, and mechanic job cost. It is not easy and does not come cheap.

 

[Rocket Man]

I'll trade you. Not something I wanted to do. But considering cost and labor for install something I have to do. Shop time of 21 hours at min $125 totals $2,625 in labor. I get it cost money and shop insurance, tools, and mechanic job cost. It is not easy and does not come cheap.

Nope, it’s not cheap. In my case (hopefully) it would be different, I’d be building an engine specifically for horsepower and forced induction. I’d really like to build an 800-1000 hp engine for a NNBS Tahoe.

 

[Summajet]

Sounds like a project.
Got oil pan clean using easy off cleaner. Saw that on YouTube and follow up by cleaning with break cleaner