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FI LSX 454 not very common ????

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Old 05-24-2009, 06:44 PM   #1
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Default FI LSX 454 not very common ????

The more I look around I have never seen a Forced Induction
LSX 454 . Why is that ? Its probably a stupid question but I
havent looked into the LSX block specs and tolerances . I think
it would be badass to have a LSX 454 with a ATI F-1 strapped
on it
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Old 05-24-2009, 06:50 PM   #2
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I may be a little off on the specs. but i think its not recommended to run over a 4.1 bore with FI

Walls get too thin
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Old 05-24-2009, 08:47 PM   #3
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I would also suggest that you don't need big cubes with forced induction.
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Old 05-24-2009, 11:26 PM   #4
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You can do FI on the 454, but it won't last long. Pistons would be too weak and you don't have much if any gaskets between the cylinders. The most I would run on FI is a 427 (4.125 bore/4 stroke). Anything over that and you're looking more at a race only setup (rebuilding your motor often).
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Old 05-25-2009, 12:25 AM   #5
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Quote:
Originally Posted by ZL1LT1 View Post
The more I look around I have never seen a Forced Induction
LSX 454 . Why is that ? Its probably a stupid question but I
havent looked into the LSX block specs and tolerances . I think
it would be badass to have a LSX 454 with a ATI F-1 strapped
on it
There are TT LSX iron 454ci's that make 1600hp and are designed for street use.

You just have to have big turbos or a really stupid loud, big supercharger to feed that many cubes. Not very street or daily driver friendly with the supercharger. But with twin turbos it can be pretty tame, considering the power it'll make.
All you need is a TT or T 408ci to make 1500hp with an LSX iron block.

There's also SBC 454 TT's that have been around for awhile. Thsoe suckers make 2,000+ hp in street cars.
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Old 05-25-2009, 12:27 AM   #6
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i want a 454 lsx.
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Old 05-25-2009, 12:32 AM   #7
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i want a 454 lsx.
I have an LSX block...and I was going to build a 454...only problem is the cylinders suck, they're too short. Yet another horrible design by the GM boys.

Best you can get and stay safe and reliable is a 4.185 bore x 4.1 stroke. For a 451ci. But I still don't like that 4.185 bore.

If they made the cylinders longer it would have been nice to do a 4.125 bore x 4.250 stroke. 454ci.

I;d hate to go more than 4.155 on the bore to start with.

A relseeved LS2 is the way to go. Or settle for a 434ci LSX iron with a 4.155 bore x 4" stroke. I plan to hit it with a 300 shot.


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Old 05-25-2009, 12:33 AM   #8
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i want a 451 lsx.
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Old 05-25-2009, 12:46 AM   #9
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http://www.ls1tech.com/forums/forced...arger-f1c.html
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Old 05-25-2009, 12:51 AM   #10
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something like a sbc 427 sounds completely bad *** to me. If I had the funds, I would love to build one of these engines! wow. Even an ole sbc 400 always sounds nice under the hood of an fbody.
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Old 05-25-2009, 08:39 AM   #11
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Quote:
Originally Posted by LS6427 View Post
I have an LSX block...and I was going to build a 454...only problem is the cylinders suck, they're too short. Yet another horrible design by the GM boys.

Best you can get and stay safe and reliable is a 4.185 bore x 4.1 stroke. For a 451ci. But I still don't like that 4.185 bore.

If they made the cylinders longer it would have been nice to do a 4.125 bore x 4.250 stroke. 454ci.

I;d hate to go more than 4.155 on the bore to start with.

A relseeved LS2 is the way to go. Or settle for a 434ci LSX iron with a 4.155 bore x 4" stroke. I plan to hit it with a 300 shot.


.
They make a tall deck lsx block so you can run a real long stroke.
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Old 05-25-2009, 09:39 AM   #12
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Why not put a gear driven f3.
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Old 05-25-2009, 04:19 PM   #13
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Quote:
Originally Posted by conan View Post
Thats gonna be one heck of a setup
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Old 05-25-2009, 05:34 PM   #14
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Haans249 is right, how long do you want it to last?

We dont go beyond a 4.155 bore and 4" stroke with the LSX block for a reason when doing FI or heavy N2o use. There are other options out the like an ERL superdeck, but as far as the bowtie LSX block goes the cylinder length is the key to what Haans is saying.
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Old 05-26-2009, 02:40 AM   #15
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Quote:
Originally Posted by veee8 View Post
They make a tall deck lsx block so you can run a real long stroke.
Is it available?

Who sells them?

How much are they?
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Old 05-26-2009, 06:49 AM   #16
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this guy has a 454 with a 106mm turbo i think he has a name on here

http://www.youtube.com/watch?v=tNtCH...eature=related
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Old 05-26-2009, 09:08 AM   #17
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You just need a tall deck LSX. NRE makes a TT 454 that does 2500hp. on high boost.
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Old 05-26-2009, 09:11 AM   #18
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Quote:
Originally Posted by 99blancoSS View Post
Haans249 is right, how long do you want it to last?

We dont go beyond a 4.155 bore and 4" stroke with the LSX block for a reason when doing FI or heavy N2o use. There are other options out the like an ERL superdeck, but as far as the bowtie LSX block goes the cylinder length is the key to what Haans is saying.
LME has several LSX 454s out there running huge shots, and Bryan says there's nothing wrong with doing it. I plan on hitting mine with 300 soon enough. I know of a couple on this forum who do it already with success. And I'm talking about motors with 2 years or more of runtime.
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Old 05-26-2009, 09:27 AM   #19
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Quote:
Originally Posted by jermzz View Post
LME has several LSX 454s out there running huge shots, and Bryan says there's nothing wrong with doing it. I plan on hitting mine with 300 soon enough. I know of a couple on this forum who do it already with success. And I'm talking about motors with 2 years or more of runtime.
I'm not going to argue about this, in fact I'll just drop it right here because your are very misinformed.
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Old 05-26-2009, 10:53 AM   #20
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ERL has a FI short block with around 480 cubes or something. But it's an expensive block.
http://erlperformance.com/images/sto...talogFINAL.pdf
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Old 05-26-2009, 10:53 AM
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