lsx designations - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Special-Ed · 04-15-2014, 04:09 PM

im a little confused, and there is a plethora of bad, wrong infomation out there...

what engine codes classify an ls3 designation?
is a L92 an ls3?
is a L94 an ls3

is any 6.2ls motor classified as an ls3 variant?

please help me with this alphabit soup =)

bpatrol · 04-15-2014, 04:38 PM

any motor that is a 6.2 would be a ls3 variant.
there were ,lets say crossover from the 6.0 to the 6.2 which had the same heads as a ls3 but were 6.0's. the 6.0's really depend on the heads, rectangular or cathedral port with ls3 being rectangular.
really any 6.0 or 6.2 is a great power motor just depends what you want to do with it.
cheers
bpatrol

wgeyer88 · 04-15-2014, 04:38 PM

Check out this wikipedia link, it's pretty helpful at breaking down the engines.

http://en.wikipedia.org/wiki/General_Motors_LS_engine

BR3W CITY · 04-15-2014, 05:20 PM

Quote:

Originally Posted by Special-Ed

im a little confused, and there is a plethora of bad, wrong infomation out there...

what engine codes classify an ls3 designation?
is a L92 an ls3?
is a L94 an ls3

is any 6.2ls motor classified as an ls3 variant?

please help me with this alphabit soup =)

l92 is the term used for square-port heads that fit the over 4" bore motors. It usually also refers to the intake manifold that goes with it. In absolute truth, its the designation for the 6.2L from the 06/07 change, which was the largest displacement v8 chevy offered with the discontinuation of the 8.1 (rights were sold to another major company....ask me how I know).

The l94 is an L92 with AFM/DOD, otherwise most of the non-fuel hard parts are the same.

The heads are basically the same, but ls3's came with different valves.

The l94/l92/ls3/ls9 are all a "Family" of engines, being that they are more similar to each other, than they are to the other engines in the line.

Nothing besides an Ls3 IS an Ls3, but they are variants/derivatives/bases.

68GMCCustom · 04-15-2014, 08:31 PM

an LS3 (6.2L) is also a genIV motor while an LS1 (5.7L) is genIII.... and the LS2 (6.0L) kind of splits the two. Differences besides those of the motors themselves are the sensor and computer changes/upgrades along the line which also meant wiring/connector changes as years went by...which is why you hear of people having trouble mixing/matching different year model stuff.

Wasted Income · 04-16-2014, 09:45 AM

Yeah man, I got one a dem iron LS2s.....

I love when LQ4/9 guys say that...

68GMCCustom · 04-16-2014, 12:33 PM

Quote:

Originally Posted by Wasted Income

Yeah man, I got one a dem iron LS2s.....

I love when LQ4/9 guys say that...

yeah...mine's an iron 6.0L LS3 hybrid (my LY6).....yeah that's it.

solidaxel · 04-17-2014, 01:28 AM

So is a 5.3 not a L S engine?

BR3W CITY · 04-17-2014, 01:40 AM

Quote:

Originally Posted by solidaxel

So is a 5.3 not a L S engine?

All GenIII and Gen IV motors are considered LS motors. Often labeled as LSx (not LSX referring to the special engine). This is supposed to mean LS(variable) so LS1,2,3,4,6,7,9. The Lq,Ly, and LM's are also "ls" engines.

Special-Ed · 04-17-2014, 09:03 AM

so the moral of the story is not all 6.2 motors are ls3, only an ls3 is an ls3. those others 6.2 are just wanna bees

jorgensensc · 04-18-2014, 02:39 PM

Quote:

Originally Posted by Special-Ed

so the moral of the story is not all 6.2 motors are ls3, only an ls3 is an ls3. those others 6.2 are just wanna bees

Uh, kinda, but not quite. My l92 has VVT and no AFM. VVT is great for heavy vehicles like my suburban, gives great low end torque. I look at it like this, for the minimal HP difference between an ls3 and an l92, the big price difference makes up for it.

04-15-2014, 04:09 PM	#1
Special-Ed Registered User Join Date: Jul 2013 Location: Floriduh Posts: 386	lsx designations im a little confused, and there is a plethora of bad, wrong infomation out there... what engine codes classify an ls3 designation? is a L92 an ls3? is a L94 an ls3 is any 6.2ls motor classified as an ls3 variant? please help me with this alphabit soup =) __________________ Ed will be known as the Tiger Woods of the integration business

04-15-2014, 04:38 PM	#2
bpatrol Registered User Join Date: Aug 2012 Location: tucson,az Posts: 274	Re: lsx designations any motor that is a 6.2 would be a ls3 variant. there were ,lets say crossover from the 6.0 to the 6.2 which had the same heads as a ls3 but were 6.0's. the 6.0's really depend on the heads, rectangular or cathedral port with ls3 being rectangular. really any 6.0 or 6.2 is a great power motor just depends what you want to do with it. cheers bpatrol

04-15-2014, 04:38 PM	#3
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Re: lsx designations Check out this wikipedia link, it's pretty helpful at breaking down the engines. http://en.wikipedia.org/wiki/General_Motors_LS_engine __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

04-15-2014, 08:31 PM	#5
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: lsx designations an LS3 (6.2L) is also a genIV motor while an LS1 (5.7L) is genIII.... and the LS2 (6.0L) kind of splits the two. Differences besides those of the motors themselves are the sensor and computer changes/upgrades along the line which also meant wiring/connector changes as years went by...which is why you hear of people having trouble mixing/matching different year model stuff. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

04-16-2014, 09:45 AM	#6
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: lsx designations Yeah man, I got one a dem iron LS2s..... I love when LQ4/9 guys say that... __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2016 Ford Explorer Sport - Twin Turbskis 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

04-17-2014, 01:28 AM	#8
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: lsx designations So is a 5.3 not a L S engine? __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

04-17-2014, 09:03 AM	#10
Special-Ed Registered User Join Date: Jul 2013 Location: Floriduh Posts: 386	Re: lsx designations so the moral of the story is not all 6.2 motors are ls3, only an ls3 is an ls3. those others 6.2 are just wanna bees __________________ Ed will be known as the Tiger Woods of the integration business



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