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Old 06-11-2013, 05:03 PM   #35
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Originally Posted by Jims Mongoose View Post
So to KCS, you are not the first one on this thread to say that I can't go to 427 reliably. Okay so I have to modify my goals. But I don't know some of the lingo.
What is a BBC?
BBC = Big Block Chevy

I'm not saying the 427ci LS3 is unreliable, but 725hp at the flywheel from 427ci AND good drivability is a lot to ask of a naturally aspirated engine (granted "good drivability" is subjective). We make 600whp pretty regularly out of our LS7 cars, which translates into ~690-705hp at the flywheel, but they tend to be a little rowdy for daily driver duty.
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Old 06-12-2013, 01:58 AM   #36
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Great Stuff, and I just got my 1LE. WOW!!!!!

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BBC = Big Block Chevy

I'm not saying the 427ci LS3 is unreliable, but 725hp at the flywheel from 427ci AND good drivability is a lot to ask of a naturally aspirated engine (granted "good drivability" is subjective). We make 600whp pretty regularly out of our LS7 cars, which translates into ~690-705hp at the flywheel, but they tend to be a little rowdy for daily driver duty.


Your comments coming from someone who actually builds them is always sobering. You are right, what is rowdy for the street is subjective. That is why I started this thread. The poster before 2012 2SS suggested the LSX crate motor. In the long run it may be what I need, but I don't want to destroy the handling of the 1LE. What are your thoughts on that?

By the way as the title says, I just go my 1LE 2SS with dual mode exhausts. Black on Black. No RS. If I decide to go Halos I'll do it later.

A few short drives both at night so I could not do much, but WoW.
Unbelievable. If you can't get a ZL1 and the new Z is just too much of a race car without amenities this is the One.

Handles like a beast and the close ratio box is awesome even on the street. Anyone saying that the dual mode is a waste ---- oh no.
Again awesome.
I'm actually a little rusty with the stick. My last stick was my 1969 Ram Air IV gto. (don't even ask about selling that car. What a mistake.) Anyway in a few minutes it came back fast. Clutch a little stiff but it's new.

This car is an awesome base to build what you want. You can have a straight line muscle car with upgrades that will make most anything think twice, and around the turns well I'm Italian so 'forget about it'.

So to all continue to suggest what route I should take.

One more thing, I had started a thread awhile back about what I percieved as lag in the SS auto's that I drove and even the ZL1 auto and to some degree the SS stick. I can tell you we had all kinds of opinions and good thoughts on that thread. Most pointed to AFM and some to break in required and one gentleman talked of 'toe to throttle' response that the companies mess with.
Well this baby does not hesitate one bit. I don't know why but it just responds quickly. Love, love it.

Will post pictures tomorrow.
Jim
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Old 06-12-2013, 09:47 AM   #37
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A few extra pounds from an iron block isn't going to "kill" your handling. In fact I doubt you'd really feel much of a difference. There's a few guys on here who have the LSX 454, do a search and ask em.

Also I should clarify that I started this thread for a completely different reason. :hijack: I don't care though, I got out what I needed in the first few replies.

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Old 06-12-2013, 10:42 AM   #38
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Originally Posted by Jims Mongoose View Post
Your comments coming from someone who actually builds them is always sobering. You are right, what is rowdy for the street is subjective. That is why I started this thread. The poster before 2012 2SS suggested the LSX crate motor. In the long run it may be what I need, but I don't want to destroy the handling of the 1LE. What are your thoughts on that?
I would prefer a sleeved block instead of the LSX block. I like the LSX a lot, but I was disappointed with the length of the cylinders in the standard deck blocks. The cylinder length is a big determining factor in how much stroke you can use in an LS engine, and the aftermarket sleeves for the LS engines is about 1/4" longer. We like to sell ERL's line of shortblocks, in this case I would suggest their M7 Dry Sleeve shortblock with the longer 5.80" sleeves, which uses a 4.185" bore and 4.125" stroke crank for 454ci. Rather than LSX versus Big Block, you get the Big Block displacement in an LSx.

Last edited by KCS; 06-12-2013 at 11:53 AM.
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Old 06-12-2013, 08:20 PM   #39
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Having recently gone from a LS3 to a LSX 454, I can say I don't notice the extra 80 lbs. or so. I don't road race my car, maybe you would notice it there. I do notice the extra low end torque.
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Old 06-13-2013, 02:49 PM   #40
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Thanks for the Info.

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Having recently gone from a LS3 to a LSX 454, I can say I don't notice the extra 80 lbs. or so. I don't road race my car, maybe you would notice it there. I do notice the extra low end torque.
Great Information. That is probably what I will do.

Did you buy the Complete 454 and just put it in.

Does it just mate up to my 1LE clutch, tranny and stuff.

Any thing you can tell me about sway would be helpful.

Jim
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Old 06-13-2013, 06:34 PM   #41
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You will need a 8 bolt flywheel and the clutch of your choice. The crate engine comes sans intake and oil pan. It takes a LS7 type intake manifold, the Camaro pan and everything else will swap over.
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Old 06-13-2013, 09:24 PM   #42
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Thanks for the info

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You will need a 8 bolt flywheel and the clutch of your choice. The crate engine comes sans intake and oil pan. It takes a LS7 type intake manifold, the Camaro pan and everything else will swap over.
Just to clarify, I did not start this thread, 2012 SS did and thanks for that.

I am beginning to think 454. Wow, this could easily take me to 750 normally aspirated.

I'm drooling, wonder if Hennessey and crew do this stuff?


To 2012 SS. I apologize, didn't mean to steal thread. I was thinking of another that I had started and had a brain fart.



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Old 06-14-2013, 11:31 AM   #43
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I got it, my 1LE

I promised I would post photos. This is the baby I'm starting with. Even stock it's awesome. Black On Black, 2SS no RS with dual mode exhausts.

I will continue to ask you guys questions as I do mods.

Thanks again.

Jim
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