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6.0 exhaust manifold bolts still a problem on new engines?

bersh

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bersh Enthusiast

bersh

Posted
Posted

I'm going to be buying a new truck in the near future, and I'm wondering if the exhaust manifold bolts breaking is still an issue on the newer 6.0 motors? I've got an 04 2500HD with the 6.0 with 128k on the clock I'm needing my 4th set of bolts on it. Other than the terrible gas mileage, and this problem, I really can't complain about the motor at all. I'm mulling a 2015 with the 6.0, and I'm wondering if the design of the head or manifolds have changed to help address this issue. Googling shows that a ton of people have the issue with my era of truck, but I can't seem to find many compalints with the newer motors.

 

I'm also mulling the duramax and will probably go that route if I can find the right deal. The local dealer has a 6.0 on the lot right now at a pretty good price though which is why I'm mulling it.

 

Thanks.

sahls01gmc Senior Enthusiast

sahls01gmc

Posted
Posted

Dang, I have more than double the miles on mine, and only recently had to replace the exhaust manifold gasket on the passenger side. I did do the bolts while I was there however....although none of them were broke.

 

I will say this, my next truck will definitely have the 6.0L in it. It's bulletproof. And tows everything I need it to.

bersh Enthusiast

bersh

Posted
  • Author
Posted

Dang, I have more than double the miles on mine, and only recently had to replace the exhaust manifold gasket on the passenger side. I did do the bolts while I was there however....although none of them were broke.

 

I will say this, my next truck will definitely have the 6.0L in it. It's bulletproof. And tows everything I need it to.

The joys of living in the rust belt I'm assuming is part of my problem.

SMiller Senior Enthusiast

SMiller

Posted
Posted

The 6.0 was revised in '07 1/2 and no longer ate gaskets like the old one did.

 

You will also be glad to know they came up with a revised trans cooler lines as they always leaked as well.

 

You might be unimpressed with a new 6.0 as it doesn't have as much power down low like your old one and instead pulls across the board meaning it has to rev higher, don't be alarmed and just let it rev, still the proven 6.0, can't hurt it.

jhplak325 Enthusiast

jhplak325

Posted
Posted

The 6.0 was revised in '07 1/2 and no longer ate gaskets like the old one did.

You will also be glad to know they came up with a revised trans cooler lines as they always leaked as well.

You might be unimpressed with a new 6.0 as it doesn't have as much power down low like your old one and instead pulls across the board meaning it has to rev higher, don't be alarmed and just let it rev, still the proven 6.0, can't hurt it.

When did they revise the trans cooler lines?

 

The 2009 I just trade 2 months ago the trans cooler, oil cooler and power steering cooler lines leaked.

 

I had replace the power steering cooler back in late spring due the leaking and was getting ready to replace the trans cooler and oil cooler lines and then ended up trading the truck in.

SMiller Senior Enthusiast

SMiller

Posted
Posted

When did they revise the trans cooler lines?

 

The 2009 I just trade 2 months ago the trans cooler, oil cooler and power steering cooler lines leaked.

 

I had replace the power steering cooler back in late spring due the leaking and was getting ready to replace the trans cooler and oil cooler lines and then ended up trading the truck in.

2011+ lines do not leak.

 

There is a aftermarket line kit that does not leak for the older trucks.

  • 2 years later...
Smith Anderson New Member

Smith Anderson

Posted
Posted

I have a 2012 Chevy HD.  30000ish miles.  Broke the passenger side rear bolt last year. Dealer fixed that. Now the driver side just broke while hauling around 8000lbs.  I guess they didn’t come up with a better design. Had a 02 HD .  Same problem.

Cowpie Senior Enthusiast

Cowpie

Posted
Posted

The problem when you have two different metals that expand at differing rates.  Aluminum heads and steel manifolds.  One can sidestep the need to replace manifold bolts, saving a lot of money, if they break by using kits like this one.....

 

http://kralautoparts.com/parts

 

there are numerous videos that show how to do this.

 

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

Would going to an ARP bolt help?  I understand the difference in the two metals.  Just seems odd that this is happening in the 6.0 more than any other engine.

SierraHD17 Senior Enthusiast

SierraHD17

Posted
Posted

It honestly doesn't though... open the hood on any 4.8 or 5.3 with higher miles and they break the same way.  The 6 liter trucks would be stressed more than the average half ton gets and it accelerates the process but I can show you plenty of 706, 862 and 243/799 heads with busted off bolts in them too.

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