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GM Gen 3 vs Gen 4 LS Engines...What are the Differences? 

Summit Racing
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LS engines are hot because of their availability, affordability, and compact size. That makes them ideal for engine swaps into seemingly anything (sorry Ford guys)!
But which LS engine are you looking at--Gen 3 or Gen 4?
If you're scouring a junkyard for a potential LS swap, there are some telltale signs to discern between a Gen. III and Gen. IV LS engine. Things like front timing cover, knock sensor location, cylinder head style (cathedral ports), AFM, and other components are key clues to which engine family you're looking at. In this video we cover some of the main visual differences between the two engines. Once you've determined if you've found an LS Gen 3 or LS Gen 4 engine, you can narrow the engine down by RPO code.
Watch this video to delineate between engine families, and then check out this link to continue your LS engine identification: help.summitracing.com/app/ans...

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23 июл 2024

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Комментарии : 60   
@francfurian8215
@francfurian8215 4 года назад
Sheesh a lot to remember. Thank you SummitRacing for compiling all the info. Cheers😊
@SummitRacing
@SummitRacing 4 года назад
Thank you for watching.
@RaceGasSmellsGood
@RaceGasSmellsGood 4 года назад
Thanks! Lots of great info! I’ve owned several Gen 3s, an ‘02 LS1 and currently an ‘05 LM7-love them!
@SummitRacing
@SummitRacing 4 года назад
Thank you for watching!
@1967davethewave
@1967davethewave 4 года назад
Good info on identifying the 2 engines. This will come in handy when purchasing a loose engine off Craigslist.
@SummitRacing
@SummitRacing 4 года назад
We agree! Thank you for watching, Dave.
@shadowopsairman1583
@shadowopsairman1583 3 года назад
Super Chevy or Chevy Hardcore has stock spec sheet
@ronaldgirard7555
@ronaldgirard7555 2 месяца назад
Great information. Trying to ID a swap in a Colorado. Best I've seen yet!
@SummitRacing
@SummitRacing 2 месяца назад
Awesome! Thank you!
@MrAddis
@MrAddis 3 года назад
This was very helpful. Thank you!
@SummitRacing
@SummitRacing 3 года назад
Thank you for watching!
@MechanicWelder94
@MechanicWelder94 4 года назад
Good info, great vid! Thx!! 🔧🔥
@SummitRacing
@SummitRacing 4 года назад
Thank you for watching!
@77zrod46
@77zrod46 3 года назад
Didn't know about the help button on summits site. Will use it more often.
@SummitRacing
@SummitRacing 3 года назад
Yes! We are happy you find this tool helpful.
@rolfwillebrands1962
@rolfwillebrands1962 3 года назад
Always great Tech from Summit Racing. But I'm planning to upgrade the LS3 in my 2017 Chevy SS (made in Australia) with either an upgraded LS style crate motor such as the 427/570 OR even go further and drop in an LT engine (wet sump) but it would help greatly if you would confirm which Çruise & Connect Chevrolet Performance package would fit and work in my SS. An LT5 with an 8 speed auto trans would be ideal but is that a viable option? If not, what package would you recommend that would be simply drop in and run? Thanks in advance. Cheers.
@jaydz7170
@jaydz7170 3 года назад
can I install a genIV single bolt cam on a gen III engine? Am i able to change just the cam sprocket to make it work or would I need to get Into all the reluctor wheel stuff?
@LEGOCAMARO
@LEGOCAMARO 4 года назад
The cam Bearings are different as well from the gen 3 to the gen 4s
@nathanpearce7169
@nathanpearce7169 2 года назад
Hey im getting ready to build an engine from scratch so i can swap it into my sierra. Doing a full restoration. Anybody have some good tips? Id like to use that 7liter block and use a deeper piston stroke along with a turbo or super charger. But drive by wire and with an 03 transmission. I know the ecu is gonna need completely reprogrammed
@patrickpham3160
@patrickpham3160 2 года назад
Can you put a 2001+ lq4 crankshaft into a 99 to 2000 block?
@nobullshiit5682
@nobullshiit5682 2 года назад
gonna be getting a 5.3l lm7 and put it in my s10, cant wait!
@SummitRacing
@SummitRacing 2 года назад
Nice!
@seangowan7441
@seangowan7441 Год назад
Can i use gen 4 ls coils on a gen 3 5.3L?
@justinbrandenburg471
@justinbrandenburg471 2 года назад
What about the 2005 lh6 is it a 24x or 58x u left that out
@ogog6017
@ogog6017 5 месяцев назад
Thanks
@ChevySpeedAddict
@ChevySpeedAddict 4 года назад
LS4s always trip up even hardcore LS guys. They forget GM made a FWD LS. They came with an all-aluminum construction with cathedral 243 heads. I love mine, and it's a pretty capable platform if you ditch the dog poo 4t65e trans. Great video!
@LEGOCAMARO
@LEGOCAMARO 4 года назад
It’s definitely a forgotten engine doing a built ls4 with a 4t80e transmission and dropping it in a hhr ss with a panel conversation.
@ChevySpeedAddict
@ChevySpeedAddict 4 года назад
@@LEGOCAMARO ooooh that's gonna be good. I've got plans to do the same swap on nitrous in my 6th gen Monte.
@SummitRacing
@SummitRacing 4 года назад
Thank you for watching! We appreciate the feedback.
@cuisinwithkev2699
@cuisinwithkev2699 2 года назад
3:31 Isn't that the oil pressure sending unit?
@RedEyedPatriot
@RedEyedPatriot 3 года назад
Let's not forget the 8.1 We need more aftermarket performance parts for em
@el00hel
@el00hel 3 года назад
that is still considered a big block i believe, a 496.
@RedEyedPatriot
@RedEyedPatriot 3 года назад
@@el00hel i think so...be a wicked engine with some good aftermarket parts...need more parts for 8.1
@el00hel
@el00hel 3 года назад
@@RedEyedPatriot just super cool to see new age tech on what is a really old platform in comparison!
@joseduranjr3152
@joseduranjr3152 2 года назад
Which version of 6.2 engine does my 2017 GMC Sierra Denali ultimate have?
@beltdrive2053
@beltdrive2053 2 года назад
LT4 engine which updated the LS in 2014
@charlesnorman7571
@charlesnorman7571 4 года назад
What about the Cadillac 6.2
@SuperSean78
@SuperSean78 2 месяца назад
Wouldve been more impressive with LT6, but what do I know. That paint job slick tho
@shemwhitehead9517
@shemwhitehead9517 3 года назад
The '02 Escalade had a throttle by wire. I know this because that's what I pulled from one to install in my '70 Skylark.
@uriaheric1565
@uriaheric1565 2 года назад
You prolly dont give a damn but does any of you know of a method to get back into an instagram account..? I somehow forgot the account password. I would appreciate any assistance you can give me
@jeffersonluke4774
@jeffersonluke4774 2 года назад
@Uriah Eric instablaster ;)
@uriaheric1565
@uriaheric1565 2 года назад
@Jefferson Luke It worked and I now got access to my account again. Im so happy:D Thanks so much, you saved my account!
@jeffersonluke4774
@jeffersonluke4774 2 года назад
@Uriah Eric happy to help :)
@ZEPRATGERNODT
@ZEPRATGERNODT 4 года назад
The debate is SBF, SBC, LS or an LT in the 71 Pinto Halfhatch.
@ispeakmurican4327
@ispeakmurican4327 4 года назад
If you want unique, do sbf or LT, if you want inexpensive go sbc, if you want the most power for a bit more, go 6.0/6.2 LS. Yes a turbo will make good power with a 4.8/5.3 but the old adage is more cubes = more power. The only hinge is weight.
@sixx6sixx107
@sixx6sixx107 4 года назад
@@ispeakmurican4327 I have 2014 LT4 6.2...is there anyway I can get rid of the newer style injectors and run them on the intake instead of straight down in the cylinder?🤷🏾‍♂️
@shadowopsairman1583
@shadowopsairman1583 3 года назад
LU3 or Atlas
@shadowopsairman1583
@shadowopsairman1583 3 года назад
@@sixx6sixx107 need port injected intake and non Direct Injected heads, just find a LR4 or Aylas.
@sixx6sixx107
@sixx6sixx107 3 года назад
@@shadowopsairman1583 I sold it and got a 2002 ls 😁
@mikeverything4098
@mikeverything4098 3 года назад
What will I need to throw a gen 4 into a gen 3 car
@joedanero5360
@joedanero5360 3 года назад
Cam sensor extension cable, Might need lingenfelter 54x to 24x box, and maybe some injector connector work. If the gen 4 has vvt and /or afm you'll want to deal with those too. Use the gen 3 oil pump (Melling 295) on the gen 4 after dod delete.
@SummitRacing
@SummitRacing 3 года назад
That is a very wide question. Here is a link to an OnAllCylinders article for some educational reading on the subject: LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family www.onallcylinders.com/2017/09/21/ls-engines-101-introductory-overview-gen-iiiiv-ls-engine-family/
@eltonlocklear7659
@eltonlocklear7659 2 года назад
Putting gen 4 in bmw soon
@kennychau314
@kennychau314 Год назад
The background music gotta fo
@oldbluegmc50
@oldbluegmc50 2 года назад
Can’t hear the guy over the fucking music
@SummitRacing
@SummitRacing 2 года назад
Hi Chris, we apologize for the inconvenience. I will pass your feedback along to our video team.
@brooksmorrison3666
@brooksmorrison3666 4 года назад
So what you’re saying is, the engineers had no clue what they were doing when they built the first one
@Dat550go
@Dat550go 3 года назад
No one knows what they are doing when it's their 1st time at anything, no matter what it is. It's only after you gain that 1st try/experience is when you gain experience, because you learn from what you just did. ✌
@VictorCuevas-cy9zv
@VictorCuevas-cy9zv 3 года назад
Ls motors. Superine ki
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