LSX block for a 440 build.
LSX block for a 440 build. So the LXS finished block. If I were to get one of these, does it have to go the machine shop for another grand worth of work or can I put a 4.185 rotating assembly in it, provided everything spec'd out properly?
It's $2,795 shipped from Jegs. Anywhere has it for better? Considering it for a 440 build. 4.185 bore on a 4.000 stroke nitrous motor. LS7 heads. Looking for all out 7,000 - 7,300 peak HP RPM in a jet boat. That's why short stroke big bore.
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It's $2,795 shipped from Jegs. Anywhere has it for better? Considering it for a 440 build. 4.185 bore on a 4.000 stroke nitrous motor. LS7 heads. Looking for all out 7,000 - 7,300 peak HP RPM in a jet boat. That's why short stroke big bore.
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Last edited by KCS; Jul 13, 2015 at 02:17 PM. Reason: Non sponsor links removed
On The Tree
Joined: May 2012
Posts: 106
Likes: 1
I don't think you're too far off, on the older LSX blocks the cam bearings were way toooo tight, when this newer version came out they were better. Basically put ARP main studs in it, align hone the mains, align hone cam bore and put a finish hone in the cylinders with deck plate.
If you want to roll the dice, sounds like this is a machined block that would normally be assembled into a crate motor but sold bare, its decked and bored... honed too? Run the main bolts, leave the main/cam as is. 4.185 sounds like it may have a finish hone in the cylinders (for whatever type of rings they use in LSX.... moly?)
Pound in the cam bearings and assemble it.
Hellfire type rings are more universal on cylinder finish than moly or steel.
If you want to roll the dice, sounds like this is a machined block that would normally be assembled into a crate motor but sold bare, its decked and bored... honed too? Run the main bolts, leave the main/cam as is. 4.185 sounds like it may have a finish hone in the cylinders (for whatever type of rings they use in LSX.... moly?)
Pound in the cam bearings and assemble it.
Hellfire type rings are more universal on cylinder finish than moly or steel.
Have you looked into sleeved aluminum blocks from R.E.D. or ERL? They're just as strong and weigh a lot less. In my opinion, the only thing the LSX has over sleeved aluminum block is priority main oiling, and even that would be negligible in an application like yours I would think.
You can get a "junk yard" aluminum block and have it sleeved for about 2k or so.
RED quoted me just under 2k to sleeve my LS7 block.
You can get a "junk yard" aluminum block and have it sleeved for about 2k or so.
RED quoted me just under 2k to sleeve my LS7 block.
Have you looked into sleeved aluminum blocks from R.E.D. or ERL? They're just as strong and weigh a lot less. In my opinion, the only thing the LSX has over sleeved aluminum block is priority main oiling, and even that would be negligible in an application like yours I would think.
You can get a "junk yard" aluminum block and have it sleeved for about 2k or so.
RED quoted me just under 2k to sleeve my LS7 block.
You can get a "junk yard" aluminum block and have it sleeved for about 2k or so.
RED quoted me just under 2k to sleeve my LS7 block.
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
http://www.erlperformance.com/produc...locks-domestic
have a look, a little more than $2000.00
R.E.D. website, I couldn't find any prices but $2000.00 is what he quoted me to
but he doesn't do the final hone to fit the pistons, thats why I went with ERL, save some
on somebody else to finish hone to fit pistons.
have a look, a little more than $2000.00
R.E.D. website, I couldn't find any prices but $2000.00 is what he quoted me to
but he doesn't do the final hone to fit the pistons, thats why I went with ERL, save some
on somebody else to finish hone to fit pistons.
http://www.erlperformance.com/produc...locks-domestic
have a look, a little more than $2000.00
R.E.D. website, I couldn't find any prices but $2000.00 is what he quoted me to
but he doesn't do the final hone to fit the pistons, thats why I went with ERL, save some
on somebody else to finish hone to fit pistons.
have a look, a little more than $2000.00
R.E.D. website, I couldn't find any prices but $2000.00 is what he quoted me to
but he doesn't do the final hone to fit the pistons, thats why I went with ERL, save some
on somebody else to finish hone to fit pistons.
$3650 for the 6 bolt option. LSX is over $1000 cheaper. I know it's about 150# heavier, but I personally couldn't make myself spend the extra money on it.
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Verdad Gallardo On The Tree
Joined: May 2012
Posts: 106
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Not knocking it, I've considered a wet sleeve block myself, but understand the costs involved.
Launching!
Joined: Dec 2014
Posts: 215
Likes: 1
But seriously, Steve at RED supplied me with a brand new 5.3 GEN4 truck block and fitted MID wet liners for $3,200, so I think if you sent him a second hand 5.3 truck block he would sleeve it out to 4.185" for around $2K. Why don't you just call him up and talk to him yourself, I find him a pleasure to do business with.
Launching!
Joined: Dec 2014
Posts: 215
Likes: 1
Hi Jimbo either really, but to get an Aluminium LS block out to 4.185-4.200" you would have to go with the MID sleeve, as I understand it, Steve is of course the right guy to speak to.
On The Tree
Joined: May 2012
Posts: 106
Likes: 1
Wet sleeve changes this by creating a its own structure within the cylinder block. To install them into an LS2 or 3 block the sleeves and aluminum material will all be bored out and liner will be installed into the main saddle of the cylinder block. This liner/sleeve will be surrounded by coolant in most scenarios. Diesel blocks are typically like this and, top fuel etc. The liner or sleeve is fully replaceable and is generally thicker iron because it doesn't have the cast in structure of the factory aluminum block. It's wet because of the coolant surrounding the iron cylinder sleeve.
Last edited by Fraser588; Jul 22, 2015 at 01:50 PM.