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lsx 451 for NA setup

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Old Dec 17, 2010 | 02:33 PM
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Default lsx 451 for NA setup

I'm tryin to get a plan going for a new motor setup, I talked to bryan @ lme ( which is an awesome guy to work with ) about an NA motor. I was originally looking @ goin with an ls7 440 but I like the stronger block and thicker cylinder walls that the lsx offers also the better oiling setup. Looking @ the lsx 451 with trickflow 245 cathedral heads n custom cam and a fast 102 .... what do u guys think?
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Old Dec 17, 2010 | 02:36 PM
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Originally Posted by 1nastyss
I'm tryin to get a plan going for a new motor setup, I talked to bryan @ lme ( which is an awesome guy to work with ) about an NA motor. I was originally looking @ goin with an ls7 440 but I like the stronger block and thicker cylinder walls that the lsx offers also the better oiling setup. Looking @ the lsx 451 with trickflow 245 cathedral heads n custom cam and a fast 102 .... what do u guys think?
What are your goals and expectations with it? Who is spec'ing and setting up the top end?
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Old Dec 17, 2010 | 07:17 PM
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Originally Posted by 1nastyss
I'm tryin to get a plan going for a new motor setup, I talked to bryan @ lme ( which is an awesome guy to work with ) about an NA motor. I was originally looking @ goin with an ls7 440 but I like the stronger block and thicker cylinder walls that the lsx offers also the better oiling setup. Looking @ the lsx 451 with trickflow 245 cathedral heads n custom cam and a fast 102 .... what do u guys think?
If you're staying NA you have no use for the iron LSX block, and its heavier and will offer nothing by way of more power potential doing an NA 440-441. Machining is gonna jack the cost way up too.

Do a 441ci (4.125 x 4.125) resleeved LS1/6. The older LS1 block (1997-1998) is arguably the strongest of them all, including stronger than the LS7 block. You can buy those suckers cheap too, then resleeve it by RED. That block will last you forever. My resleeved LS6 block is 9 years old and perfect still.

.
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Old Dec 18, 2010 | 12:20 AM
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Stick with the original plan. If you think you need a stronger block (you don't) look at the ERL super deck.
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Old Dec 18, 2010 | 07:58 AM
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What are your plans for the motor, are you going to spray it? Plan on doing alot of trips to the track? So far I have had no issues with the ls7 block. If I were to change anything I think I would have spent the money to upgrade the crank to cut down on the rotating mass. You will need the 102 intake and either a 100mm maf or a SD tune.
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Old Dec 18, 2010 | 08:45 AM
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My topend is for sale if you're interested, custom TFS 245's, ported Fast 102 and EPS custom cam. I'll PM you the details.
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Old Dec 18, 2010 | 11:58 AM
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I plan on staying NA, if anything i may spray off the line , but im running 4.56 gears , and i dont want to have to go up to a damn 30 in + tire...I like the idea of staying alum. for the weight saving, but ive been super impressed with the lsx blocks , seems like the best for the money....BTW pm sent to ya Brian
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Old Dec 18, 2010 | 03:21 PM
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Another option for blocks is the new RHS block.
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Old Dec 18, 2010 | 03:32 PM
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Originally Posted by Philip@HPE
Another option for blocks is the new RHS block.
Yeah , that would be ideal for what i want as far as strength and light weight but its alittle out of my price range i think
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Old Dec 18, 2010 | 04:55 PM
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I had a problem with the 4.125" stroke setup a while back, If it were my setup - 4.185" bore and 4" stroke on the standard deck-height iron blocks.
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Old Dec 18, 2010 | 05:31 PM
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Originally Posted by Brian Tooley
My topend is for sale if you're interested, custom TFS 245's, ported Fast 102 and EPS custom cam. I'll PM you the details.
Bardstown
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Old Dec 18, 2010 | 07:32 PM
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Gm High Tech Performance magazine had a LSX 451ci NA build that made almost 700 hp with different manifolds being tested. It was a set of articles, should be on their web site.
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Old Dec 18, 2010 | 08:23 PM
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lme is building me a n/a rhs 502 right now, should be on the dyno next week i hope.
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Old Dec 18, 2010 | 09:01 PM
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Originally Posted by supermouse4
Gm High Tech Performance magazine had a LSX 451ci NA build that made almost 700 hp with different manifolds being tested. It was a set of articles, should be on their web site.
That was LME, just wish they had the chance to test the Fast 102 with the others, That setup on Brian Tooley's motor seemed healthy
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Old Dec 20, 2010 | 10:57 PM
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Originally Posted by 1nastyss
Yeah , that would be ideal for what i want as far as strength and light weight but its alittle out of my price range i think
Especially for what you want and your power goal...the RHS block is a complete waste of money. Any of the LSx resleeved blocks will handle what you want for years and years and years....if you have the right person sleeve it.

.
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Old Dec 21, 2010 | 04:09 AM
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Originally Posted by Brian Tooley
My topend is for sale if you're interested, custom TFS 245's, ported Fast 102 and EPS custom cam.
Already?

The novelty of 700hp gone that quick?!?

Brent
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Old Dec 27, 2010 | 08:18 PM
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Originally Posted by ruquik
lme is building me a n/a rhs 502 right now, should be on the dyno next week i hope.
More info?
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Old Dec 27, 2010 | 08:39 PM
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It's not that, I really like my engine/power curve/streetability.

My new goal is to make 750 with the new TFS square port heads on E85

Originally Posted by LPE 403
Already?

The novelty of 700hp gone that quick?!?

Brent
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Old Dec 27, 2010 | 09:18 PM
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Brian, how much are you asking for that top end?? And are you selling it all together or are you willing to split it up? PM me please! Thank You!

-James
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Old Dec 27, 2010 | 10:45 PM
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Originally Posted by LT1Formula007
Brian, how much are you asking for that top end?? And are you selling it all together or are you willing to split it up? PM me please! Thank You!

-James
Sorry, it's gone.
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