differences in LSX engines?

[bigarmzz]

i've been checking on these on the internet, and there's a bunch of different kinds of LSX engines...what is the differences? there's like a LQ4, LQ9, LM4, LS1, LS2, etc..????

plus, i'm still trying to decide between the 5.3L and 6.0L....then i found a post where a guys putting in a 6.2L...????

this is confusing to an old redneck...

[Thealien]

There are links to this in my LS swap thread in my signature but here is a good start


LS Primer


LS Primer part II

Hope that helps some

[N2TRUX]

The difference is $$$$... If you can find a decent deal on a 6.0 or 6.2 that's where you want to go.

[menace121978]

Originally Posted by bigarmzz

i've been checking on these on the internet, and there's a bunch of different kinds of LSX engines...what is the differences? there's like a LQ4, LQ9, LM4, LS1, LS2, etc..????

plus, i'm still trying to decide between the 5.3L and 6.0L....then i found a post where a guys putting in a 6.2L...????

this is confusing to an old redneck...

i better get this right so Bob doesnt come in here and chew my arse...

lq4: 6.0, 320hp, most are iron block & aluminum heads, and dome shaped pistons. you can run '87 octane in them. found in 3/4 ton trucks, vans, denalli, etc.
lq9: 6.0h.o., 345hp, iron block aluminum heads, found ONLY in esclades. they have flat top pistons and recommend 91 octane.
lm4: all aluminum 5.3, rated at 295hp. found in trailblazers i believe.
lm7: 5.3, 280-295h.p., iron block aluminum heads, found in tahoes, trucks, on and on... most popular. millions made.
ls1: 346c.i. all aluminum. 305h.p. found in fbodys, vettes, and '04gto's.
ls2: 364ci 6.0, 400hp all aluminum, 2nd generation of the ls1. found in vettes, gto's, tbss...

this is a basic generic run down of the differences... all ls base motors have 6 bolt mains. the ls1, 2, 3, etc. are over priced. they charge an "ls tax" when you buy one wish i had more time and could go into more detail but i have to get to work. i'm sure others will chime in here. this is a good thread! i'll edit any mistakes i made when i get home tonight

and btw... there is an awesome book called "how to swap an ls motor into anything" with detailed discriptions of all the motors.

[bigarmzz]

Originally Posted by Thealien

There are links to this in my LS swap thread in my signature but here is a good start


LS Primer


LS Primer part II

Hope that helps some

Good links, thanks

[bigarmzz]

Originally Posted by N2TRUX

The difference is $$$$...

this seems to be what i'm finding

[bigarmzz]

Originally Posted by menace121978

i better get this right so Bob doesnt come in here and chew my arse...

lq4: 6.0, 320hp, most are iron block & aluminum heads, and dome shaped pistons. you can run '87 octane in them. found in 3/4 ton trucks, vans, denalli, etc.
lq9: 6.0h.o., 345hp, iron block aluminum heads, found ONLY in esclades. they have flat top pistons and recommend 91 octane.
lm4: all aluminum 5.3, rated at 295hp. found in trailblazers i believe.
lm7: 5.3, 280-295h.p., iron block aluminum heads, found in tahoes, trucks, on and on... most popular. millions made.
ls1: 346c.i. all aluminum. 305h.p. found in fbodys, vettes, and '04gto's.
ls2: 364ci 6.0, 400hp all aluminum, 2nd generation of the ls1. found in vettes, gto's, tbss...

this is a basic generic run down of the differences... all ls base motors have 6 bolt mains. the ls1, 2, 3, etc. are over priced. they charge an "ls tax" when you buy one wish i had more time and could go into more detail but i have to get to work. i'm sure others will chime in here. this is a good thread! i'll edit any mistakes i made when i get home tonight

and btw... there is an awesome book called "how to swap an ls motor into anything" with detailed discriptions of all the motors.

good info....i miss the days of just "350 v/s 305"

[N2TRUX]

Bigzz what you will find out that will probably most influence your decision is convience. Your fisrt choice might be a 6.2, but if you have to pay to ship it across the country, then the value goes away.

The 5.3's are a great motor and of course the most common. If you do all the work, they can be swapped for a very afforable price.

If you plan to build the motor, it's besster to start with the biggest you can get. With pure bolt ons, the 6.0 is capable of 500hp that will run on pump gas.

[silvereagle07]

I was looking for the differences the other night and I ran accross these sites. I was contemplating doing the LS swap too. I love the 6.0L in my Trailblazer SS. It has 395hp stock and really fun to drive. I can't imagine what a short bed would feel like with that engine.


http://en.wikipedia.org/wiki/GM_Vortec_engine
http://en.wikipedia.org/wiki/GM_LS_engine

[andrewmp6]

Looking at them the intake the oil pan and front drive is the big things different.

[STOCKISH]

I saw a store on ebay that had lots of them. Their store name was
just chevy trucks. Very resonable as well. And once you drive a 5.3 or 6.0 powered truck you'll forget all about the 305 vs. 350 thing.

[3r!c84]

can i throw in a question too?

differences of a lt1 and vortec motor

[STOCKISH]

The LT1 and Vortec have almost nothing in common except displacement. The Vortec heads use the combustion chamber desigh originally designed for the LT1 heads but other than that and a couple interchangeable parts they are nothing alike. If you do a Google search for LT1 vs. Vortec you will find TONS of info.

[78-5.3]

dont forget the 4.8 LSX
i love the 5.3 in mine i took it out today for a spin im impressed with the power it makes

[SatisTraction]

i bought a LQ9 last week for my project. for the price i could not pass it up

[menace121978]

right on! what year and how many miles? details man! details...

[DirtyLarry]

You can go to the public GM website below and look up GM Powertrain engine details and summaries back to 2003.

The “Story” download Word document will outline primary changes. There is a link for car and truck engines and archives back to 2003.

Some engines are basically the same but use a different RPO codes due to the changes in the package to fit a certain vehicle. For example, the LH9 5.3L in the Colorado/Canyon is essentially the same as other 5.3L engines like the Silverado/Sierra LC9 except for special manifolds, oil pan, HP and torque ratings. The certified rating of a LH9 doesn’t necessarily mean real world power is any more or less power than a LC9. It is all about certifications and meeting regulations within a package and GVW range.

http://archives.media.gm.com/us/powe...10truck_us.htm

Many people don’t realize that GM Powertrain is its own separate company within General Motors. GM Powertrain is a powertrain supplier just like Cummins or Cat being they sell engines (and transmissions) to other automotive companies for use in non-GM vehicles such as Suzuki, Daewoo, Rolls-Royce, Navistar, Tugg, Mercruiser, VolvoPenta, Hyster, etc. When Chevrolet builds a truck they actually have to "buy" and engine from their sister company GM Powertrain. It is crazy and keeps their accountants busy moving money from their front pocket to the back.

[SatisTraction]

Originally Posted by menace121978

right on! what year and how many miles? details man! details...

2004 escalade. 30,00 miles. engine, tranny, harness, computer for $1250

[3r!c84]

wow!!! find me a deal like that

[bigarmzz]

Originally Posted by SatisTraction

2004 escalade. 30,00 miles. engine, tranny, harness, computer for $1250

holy crap! find me one like that and i'll buy that bad boy right now!!

[3r!c84]

get in line!!! haha

[menace121978]

Originally Posted by SatisTraction

2004 escalade. 30,00 miles. engine, tranny, harness, computer for $1250

hell of a deal man... start a build thread and post some pics of the truck and install

[SatisTraction]

Originally Posted by menace121978

hell of a deal man... start a build thread and post some pics of the truck and install

i plan to start a thread in a couple weeks. i need to get a few more parts 1st. besides that the shop is too cold