Verdict on LSX iron block.......are they good or what?
#1
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I searched....got nothing.
I'm wanting to start my build soon. I was going to use a 6.0 iron with studs + LS9 gaskets. But its going to make 1,200 RWHP. So I don't want to risk lifting the heads and having to start over.
Some people tell me the LSX iron block is junk, some say its fine, some say its a crap shoot from block-to-block.
Can someone tell me....what's the deal? Is there certain machining that needs to be done to make them good, like fixes, tricks, etc...?????
I want to use one if they are 100% rock solid and have no manufacturing defects or issues.
Oh.....402ci + GT55, thats the build.
Thanks.
.
I'm wanting to start my build soon. I was going to use a 6.0 iron with studs + LS9 gaskets. But its going to make 1,200 RWHP. So I don't want to risk lifting the heads and having to start over.
Some people tell me the LSX iron block is junk, some say its fine, some say its a crap shoot from block-to-block.
Can someone tell me....what's the deal? Is there certain machining that needs to be done to make them good, like fixes, tricks, etc...?????
I want to use one if they are 100% rock solid and have no manufacturing defects or issues.
Oh.....402ci + GT55, thats the build.
Thanks.
.
Last edited by LS6427; 04-12-2012 at 06:42 PM.
#2
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Im no expert and can only go off what ive read and seen from the members here,
and what ive seen, its a crap shoot, lol.
we've read people's stories of core shift, and shitty cylinder walls, to people having fantastic results.
If something has changed and QC has greatly increased, id consider one on my upcoming engine build myself. So im in for info as well
and what ive seen, its a crap shoot, lol.
we've read people's stories of core shift, and shitty cylinder walls, to people having fantastic results.
If something has changed and QC has greatly increased, id consider one on my upcoming engine build myself. So im in for info as well
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AS long as you don't go with a lsx 454 standard deck your fine. It's the standard deck 454 that makes the cylinder walls to thin mixed with core shift you risk putting a hole in the cylinder with big boost. Either go tall deck or std deck 427 and you won't regret it.
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#14
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Back from the dead.....
So where's the best place to get these LSX iron blocks now?
I think I'll sonic test it and maybe have RED sleeve it. Expensive, but total piece of mind. Plus 6 bolts per cylinder.......
I think Id rather go 6 bolts per cylinder because I really want to go 20psi and don't want to worry about gaskets or lifting heads........
I'll sell my new AES fully forged iron 390ci.......it only has about 1000 miles on it.
.
So where's the best place to get these LSX iron blocks now?
I think I'll sonic test it and maybe have RED sleeve it. Expensive, but total piece of mind. Plus 6 bolts per cylinder.......
I think Id rather go 6 bolts per cylinder because I really want to go 20psi and don't want to worry about gaskets or lifting heads........
I'll sell my new AES fully forged iron 390ci.......it only has about 1000 miles on it.
.
#15
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Back from the dead.....
So where's the best place to get these LSX iron blocks now?
I think I'll sonic test it and maybe have RED sleeve it. Expensive, but total piece of mind. Plus 6 bolts per cylinder.......
I think Id rather go 6 bolts per cylinder because I really want to go 20psi and don't want to worry about gaskets or lifting heads........
I'll sell my new AES fully forged iron 390ci.......it only has about 1000 miles on it.
.
So where's the best place to get these LSX iron blocks now?
I think I'll sonic test it and maybe have RED sleeve it. Expensive, but total piece of mind. Plus 6 bolts per cylinder.......
I think Id rather go 6 bolts per cylinder because I really want to go 20psi and don't want to worry about gaskets or lifting heads........
I'll sell my new AES fully forged iron 390ci.......it only has about 1000 miles on it.
.
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The machine shop guy liked what he saw when the Dart block got dropped off and he started inspecting it. The only glitch so far has been the extra time waiting for the head studs. Everything has been going smoothly since.