Deck Thickness on LS7 block.
Deck Thickness on LS7 block. How much can be safely cut off of the deck of the LS7 block? I need to cut .010" off for a 9.030 deck height for my piston configuration. That much should not be a problem, right?
TECH Apprentice
Joined: Oct 2007
Posts: 302
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Any reason you can't run a thinner gasket?
I wouldn't think there would be a problem with cutting the deck height-wise, but it's not really an easy job with iron sleeves on an aluminum block. It's an interrupted cut and tends to smear the steel into the softer aluminum.
I wouldn't think there would be a problem with cutting the deck height-wise, but it's not really an easy job with iron sleeves on an aluminum block. It's an interrupted cut and tends to smear the steel into the softer aluminum.
Any reason you can't run a thinner gasket?
I wouldn't think there would be a problem with cutting the deck height-wise, but it's not really an easy job with iron sleeves on an aluminum block. It's an interrupted cut and tends to smear the steel into the softer aluminum.
I wouldn't think there would be a problem with cutting the deck height-wise, but it's not really an easy job with iron sleeves on an aluminum block. It's an interrupted cut and tends to smear the steel into the softer aluminum.
The Comstar crank kit that I ordered has Mahle pistons that sit .010" below the deck on a 9.040" deck. To get .040" quench I would have to run a .030" gasket, or either cut the deck .010" and run a .040" gasket. .030" is getting pretty thin for a LS head gasket?
Thanks!
Yes, my machine shop is going to check it out.
I don't believe cutting .010" will hurt a thing, but I can't seem to find anything on the actual deck thickness of the block.
Yes, my machine shop is going to check it out.
I don't believe cutting .010" will hurt a thing, but I can't seem to find anything on the actual deck thickness of the block.
TECH Apprentice
Joined: Oct 2007
Posts: 302
Likes: 20
I can't see where it could hurt a thing.
If 1/10 of 1/10 of an inch made a difference, I believe I'd look for another block
Big and small block cast iron blocks are routinely cut .015 - .025 when zero decking.
I hope you'll report back and let us know what your machinist says, I'd like to know what it specs out to.
If 1/10 of 1/10 of an inch made a difference, I believe I'd look for another block
Big and small block cast iron blocks are routinely cut .015 - .025 when zero decking.
I hope you'll report back and let us know what your machinist says, I'd like to know what it specs out to.
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I can't see where it could hurt a thing.
If 1/10 of 1/10 of an inch made a difference, I believe I'd look for another block
Big and small block cast iron blocks are routinely cut .015 - .025 when zero decking.
I hope you'll report back and let us know what your machinist says, I'd like to know what it specs out to.
If 1/10 of 1/10 of an inch made a difference, I believe I'd look for another block
Big and small block cast iron blocks are routinely cut .015 - .025 when zero decking.
I hope you'll report back and let us know what your machinist says, I'd like to know what it specs out to.
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deck thickness The deck thickness on the LS7 block is .550". .010" is nothing to take off. Go ahead and deck the block if you can't find gaskets the thickness you are looking for.
Steve
Steve
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Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
FormerVendor
Joined: Nov 2001
Posts: 3,065
Likes: 6
From: Houston, Tx.
