Fightiq

Hello, everyone. Brand new member here, and somewhat new to LS engines as well. I have a 2006 2500HD with a 6.0L. I am hovering over the "checkout now" button to order an LSX376 to swap out the 6.0L with. I've decided before I do this that I should ask some questions...

1) Will my stock intake and ignition work with this engine, or do I need to change to LS3 parts?

2) Will my ECM work(with a tune), or will that need to be swapped?

3) I see the engine listed at 450Hp but does anyone know the torque figures?

4) Do any of you know if block modification would be required to swap in a stroker crank to this engine?

Thanks for any and all answers you guys can provide!

Ellesone

Why not just rebuild what you have to a 408 for less money?
You know everything will be the same then and 408 makes more tq than a 376

Gunslinger09

You will need an Ls3 style intake. Everything else will work. It will take a 4 inch stroker crank with no mods to the block.

Fightiq

After machining, piston, crank, new heads(or rebuilding what's on it), etc I honestly don't think I could build what is in the truck for much less(if any) than purchasing a the 376. You can buy a 376 with warranty for $5400. I MAY be able to save $700-$800 by building what's in it, but for the convenience of not having to park the truck for a month or more while I wait for machining, I say it's worth it.

scarybowtie

iTrader: (9)

You will need a ls3 intake. Computer should work with a tune. I believe you will need a cam sensor adtapter or something for ls3 style swap? (Someone correct me). I highly doubt you would need any block modifications to fit a longer crank in a lsx block but why buy the high dollar lsx376 just to swap parts out? Your 6.0 with a heads/cam swap will make about the same numbers at alot less cost. Jmo

Fightiq

Awesome, thanks for the info. With the LS3 style intake, do I need those fuel rails and injectors as well?

Fightiq

Well, the striker crank is more of a "maybe" type of a thing because I like the idea of having a 429. In answer to your other question, my 6L has over 100k miles on it so there's no way I'm going to up the output without completely rebuilding the internals as well to ensure reliability. Heads/cam/intake would put me about $2k in, machining would be another $1k, internal parts another $1k...already up to $4k there and the truck would be down forever while waiting for machining. With the 376, which is only $5400, I swap it in on a weekend and have a warranty

scarybowtie

iTrader: (9)

I understand your reasoning. Sounds like you should just find a crate motor and have fun, sell the 6.0 for 750the to recoup a little money. But a ls3 build isn't a direct swap. You would still need a intake, harness adapters, fuel rails, injectors, ect ect. Just be sure and factor all of that in with your costs

lemons12

iTrader: (71)

I'd use the 6.0 and make a 370 or 408 for half the cost just about.

Ls3 swaps are a pain compared to an ls1-6.0 swap.

87silverbullet

iTrader: (11)

Just put a turbo kit on that 6.0 and make way more power than that lsx376. 100k miles is nothing. Many guys have put turbos on motors well past 100k.

Truck will sound and look like stock until other people hear the whistle

Is it 4wd? That would make a sick ride if it is.

Tainted

iTrader: (9)

The 4.065 ls3 bore is a great thing to have...

mcdonald77

iTrader: (21)

If my 370 LQ9 goes TU im having it bored to 4.065 if the block checks out ok.

Tainted

iTrader: (9)

Good luck, not all blocks were created equal

Unreal

The LSX376 crate motor is a waste of money. Get a built motor from a different company for less money that will have nicer crank/rods/pistons. The LSX one basically has stock ls3 internals. You would be better off just buying a stock LS3 and saving the weight.

Look at the motor options from AES, HKE, LME, etc etc before ordering. You will get a lot more motor for your money.

1-87 chevy

iTrader: (15)

Thompson motorsports has 370 in diffrent configureations for way less

lemons12

iTrader: (71)

My Thompson built 370 was over a grand cheaper shipped than the majority of the major sponsors 370s before shipping.
I got a lot of nice additions to mine and it still came out shipped cheaper than the others before shipping.

thompson

iTrader: (4)

We can build you our TMS 495HP long block with a 12 month warranty that will be a DIRECT REPLACEMENT for your truck. No need to change intake, valley cover, Front cover, knock sensors,..... The whole thing with no core is $4649. We can also take your motor in as a core and take some off of it depending on the condition of the motor. Give us a shout, save some $ and get a motor fast with a great warranty.

ez2cdave

The LS3 crate motor, direct from GM with all brand new parts, comes with a 24 month warranty, all for $6195 ( if you "know" someone, you can get it for $4350 - 30% off )

WARRANTY : http://www.chevroletperformance.com/...arranty_4C.pdf

MOTOR : http://www.chevroletperformance.com/...1992&engCat=ls

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