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Username Post: 2001 5.3 110K miles, burning oil, replace engine or port        (Topic#244246)
Team Hard 
Forum Newbie
Posts: 3

Reg: 06-22-10
06-22-10 10:04 AM - Post#1934141    

I am about to take on a job for a friend to fix his 2001 Silverado. I wanted to get some opinions on it first though... he has roughly 110K on the clock and as far as I know the power train is all original on the truck. Its been burning oil for about a year, but has recently progressed to the point where he claims noticeable performance decrease. At first I wanted to just take off the heads and have everything ported, install new valves, etc. and call it a day... but after reading more about the GM piston slap problem, Im curious just how bad the cylinder walls are scored and if that might be part of the issue.

That said, we are now looking at reman and lightly used engines and planning on just doing an engine swap... what do you guys think?

 
Low priced Genuine GM Auto Parts
Bad Bowtie 
Valued Contributor
Posts: 4559
Bad Bowtie
Age: 42
Loc: TX
Reg: 07-04-03
06-22-10 12:13 PM - Post#1934185    
    In response to Team Hard

I'd pull it and tear it down to see what is happening in there. Then you know what you got to work with. If you decide to install a GM reman- you've already pulled the old motor...

GMC. We are Professional Grade.

http://www.cardomain.com/id/2004VHO


 
Team Hard 
Forum Newbie
Posts: 3

Reg: 06-22-10
06-22-10 01:34 PM - Post#1934234    
    In response to Bad Bowtie

trouble is I only have a couple days to get it done... and I am only really qualified to take it apart and put it together, I wouldnt know how good/bad the cylinders or any part of the valve train should look if I were to take it apart.

 
motorman 
Dedicated Enthusiast
Posts: 5176

Loc: south western pa.
Reg: 01-25-00
06-22-10 02:20 PM - Post#1934262    
    In response to Team Hard

  • Team Hard Said:
I am about to take on a job for a friend to fix his 2001 Silverado. I wanted to get some opinions on it first though... he has roughly 110K on the clock and as far as I know the power train is all original on the truck. Its been burning oil for about a year, but has recently progressed to the point where he claims noticeable performance decrease. At first I wanted to just take off the heads and have everything ported, install new valves, etc. and call it a day... but after reading more about the GM piston slap problem, Im curious just how bad the cylinder walls are scored and if that might be part of the issue.

That said, we are now looking at reman and lightly used engines and planning on just doing an engine swap... what do you guys think?


2001 LS engines used a poor designed ring package and GM came up with a better second scraper ring and better oil ring expander. in the fix they did not even change the top ring so the engine did not have to be broken in again
retired race engine builder,former NASCAR tech inspector. new corvettes owned 1959,1962,1963,1964,1965, 1966,1997,1999,2002,2005, 2008 plus 30+ other chevy cars and trucks along the way. 2008 corvette sold and waiting on a C-7.


Edited by motorman on 06-22-10 02:22 PM. Reason for edit: No reason given.

 
Team Hard 
Forum Newbie
Posts: 3

Reg: 06-22-10
06-23-10 07:26 AM - Post#1934620    
    In response to motorman

  • motorman Said:

2001 LS engines used a poor designed ring package and GM came up with a better second scraper ring and better oil ring expander. in the fix they did not even change the top ring so the engine did not have to be broken in again



Ok, that is also good to know... so what year engine should I be looking for to replace his, in other words what year did they get it right?

 
silvervortek 
Senior Member
Posts: 732

Loc: Georgia USA/ west coast I...
Reg: 10-10-04
07-12-10 09:27 PM - Post#1944522    
    In response to Team Hard

A new pcv valve has solved the oil burning in some 5.3 litre engines. is it running bad or just burning oil and by the way if i put that high milage oil in my engine it will burn 2 quarts between oil changes,tried it once. i usually use mobil 1 syn and burn half a quart between changes / been like that since new/ has 170 thou miles on it now and still pulling strong.
I have a 99 silverado, regular cab ,long bed ,was 4 wheel drive,has auto and 5.3 vortek engine. one hundred and thirty


 
Low priced Genuine GM Auto Parts
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