Ls3 bored to 4.080 ok for boost?
Thread Starter
Joined: Dec 2002
Posts: 1,139
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From: East Of Pittsburgh PA
Ls3 bored to 4.080 ok for boost? I have an ls3 that's bored 4.080. I may decided to use if for boost but im not sure. Ive built plenty of ls7 boosted motors and only had one cylinder wall crack on me. I was wonder if Im safe to use this block for a boosted application or am I pushing it?
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Joined: Mar 2013
Posts: 1,137
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From: Studewood/Acres-Homes TX.
Once you send it to have the block done they can sonic test the bores so you will know..rule of thumb leave as much bore as possible for when you want 2 up the boost 5 cubic inches won't matter with 10-18 psi.lol..
How do you sonic test a block with sleeves and know what is the thickness of the block and what is left of the sleeve?
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Sonic checking sleeve thickness You can check the thickness of the sleeve with a good ultra sonic thickness tester. The tester will distinguish between the sleeve and block. Pain to do with the ribbed outside surface of the cast in sleeve however.
I wouldn't bother. You should be fine with mild boost. You took .010" off the wall thickness of the sleeve. The LS3 is the same block casting GM uses for the LSA and LS9. The difference between the blocks is with the main caps used, ductile iron on the LSA, doweled steel on the LS9, plus the larger head fasteners, 12mm, on the LS9.
Steve
Steve
I wouldn't bother. You should be fine with mild boost. You took .010" off the wall thickness of the sleeve. The LS3 is the same block casting GM uses for the LSA and LS9. The difference between the blocks is with the main caps used, ductile iron on the LSA, doweled steel on the LS9, plus the larger head fasteners, 12mm, on the LS9.
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
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Joined: Mar 2013
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From: Studewood/Acres-Homes TX.
just a thing from iron blocks...aka never owned a aluminum block. I go cheap. LSX tall deck vs ERL. But Boss is right, **** up on the tune it won't matter what bore you go with.
Steve is my go 2 guy 4 anything with a sleeve..we have talked about how WJ said how GM messed off the LSX block
Steve is my go 2 guy 4 anything with a sleeve..we have talked about how WJ said how GM messed off the LSX block
Thread Starter
Joined: Dec 2002
Posts: 1,139
Likes: 1
From: East Of Pittsburgh PA
"LSXHawk" as long as you stick under the 1000 Flywheel HP mark with a properly prepped assembly (core shift factored in of course) it should not give you any troubles at that size.
