LS7 head Gasket problems with Iron 6.0L
LS7 head Gasket problems with Iron 6.0L Apparently I didn't do a good enough job picking out my head gaskets for my 408 turbo build. I was getting ready to put my heads on tonight and saw that the LS7 head gasket cooling holes are not lining up with the block.
Does anyone know if there is a GM head gasket meant for the Iron 6.0L blocks that have the following specs? (Or do I need to buy cometic gaskets?)
Compressed thickness (.051")
Gasket Bore (4.125")
Boost friendly (15psi)
Does anyone know if there is a GM head gasket meant for the Iron 6.0L blocks that have the following specs? (Or do I need to buy cometic gaskets?)
Compressed thickness (.051")
Gasket Bore (4.125")
Boost friendly (15psi)
Also do the cometic gaskets require copper spray to properly seal the water passages?
Thanks
Staging Lane
Joined: Oct 2007
Posts: 53
Likes: 0
The correct way of course is to use the right gasket. But, after looking at the pics, the hole line up is a cooling system issue and not the cylinder bore seal. As long as the gasket has the right dimension for the cylinder bore and head bolts, a little trimming to fit the water passage should be OK.
Give it a try and see what happens. I do not see the water seeping out of the trimmed gasket and into the cylinders or leaking into the oil.
Give it a try and see what happens. I do not see the water seeping out of the trimmed gasket and into the cylinders or leaking into the oil.
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For any engine other than an ls7 or lsx, the standard cometic gaskets will work in your respective bore sizes. We commonly use the gm L92 gasket interchangeably on the 6.0l blocks as you HAVE to get a gasket that fits the block but also the head. There is a problem with using a 4.030 or even a gasket smaller than a 4.060 on the l92 head even if its on the iron block. We always recommend at least a gasket that is 4.085 or larger for that.
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The correct way of course is to use the right gasket. But, after looking at the pics, the hole line up is a cooling system issue and not the cylinder bore seal. As long as the gasket has the right dimension for the cylinder bore and head bolts, a little trimming to fit the water passage should be OK.
Give it a try and see what happens. I do not see the water seeping out of the trimmed gasket and into the cylinders or leaking into the oil.
Give it a try and see what happens. I do not see the water seeping out of the trimmed gasket and into the cylinders or leaking into the oil.
