L4 engine
 

is it possible to swap engine with L4 6.2 supercharged?

I assume you are asking about putting a newer 6.2 in an 2003-2007 H2 that came with the 6.0. Now if you mean on a 2008 or 2009 that would probably be doable.

On upgrading an older 6.0 to the newer 6.2, anything is possible for the right amount of money.

Realistically. No. You would have to replace the ENTIRE wiring harness, all buttons, switches, gauges, the transmission, transfer case, and all computers. You could buy a 2008/2009 model for less than what it would cost to try and adapt that engine. to an older one.

There's a guy on the facebook group who's just stuck a stroker kit in his H2. Can't remember if 417 or something, but it looks like he's having good results with that. Sounds nice from the vids he's posted.

As Mix said, anything is possible with enough money.


Personally I would stroke the current iron block you have or even FI the thing with some forged internals. That way you don't have to worry about harnesses and the other electronic goodies to make the other engine work.

A popular swap is adding the L92 heads & intake to the 6.0. Do a web search and you will find quite a bit of information.

Any 24x engine is a direct swap no matter the displacement. Just put your accessories on and install then get it tuned. That is B.S that you need to change wiring harness, t-case etc if you stay with a 24x engine.

Sure - physically it will bolt right in.
Different PCM's with different connectors. Different fuel injectors with different connectors. Knock sensors on the side of the block instead of under the intake (have to extend that harness). I think Lingenfelter does make a couple of computer adapters that you could use. Will need a totally custom tune regardless to disable VVT. If you are replacing an older 6.0 with a return fuel rail you will have to change it up to the newer returnless setup. Going to need to get the intake and throttle body unless the new engine includes then as the Gen IV engines have square intake ports and not cathedral ports. Still a LOT of little fiddly things to also be sure of as well.

Its been gone over ad nauseum on LS1Tech, Perfomancetrucks, Pirate4x4, etc. It is doable and if you stay with the 4L65 transmission it is not that tough to do it all with the harness extensions and adapters that are available. But - without the 6L80 transmission the extra .2L of displacement and extra bit of HP is hardly worth the effort. Do it and change to the 6L80 trans, then it really starts getting complicated and expensive.

Read my post...24x motor. I just installed a 2011 6.0VVT 58x motor and 6l90E in my 2006 H3 I promise I know what it takes after just completing this project. If I was going to do a swap in a H2 I would just order a crate motor what ever displacement your budget allows with a 24x reluctor ring. Just an example (https://blueprintengines.com/collect...ucts/gm-408-ls) This is a very common option on crate engines and will bolt/ plug right in. In regards to transmission I would just run a 4l80E there is already a kit to install and plug right in (https://transmissioncenter.net/shop/...p-information/)

thanks for the responses. my bad i forgot to mention. i got 2008 H2. thinking about replaceng existing 6.2 with LS4 supercharged engine. from 395 hp to 650 would be nice. but how about the tyranny. needs to be replaced as well? thanks all

In your case since you are already running a gen IV engine I'd guess that really and truly would be a direct and easy swap and you would just need a custom tune done. I'm not as familiar with the newer 6L80 trans but my understanding is that even stock, just like the 4L80, those should be able to take quite a bit of horsepower without needing any heavy duty or performance mods. On the 03-07 H2's the stock 4L65 trans will have a farily short life with 400+ hp. That being said the 4L65 can be rebuilt to withstand upwards of 600 hp but its not cheap and at that point you might be nearly in the same cost range to get that kit linked above to convert to a 4L80 which by design is a much heavier duty unit. Wonder what that trans place charges for all of the components needed for a H2? Does look like a good number of bits are needed along with some modifications. Swapping in the trans tune segment is pretty easy for any competent tuner with HPTuners or EFI Live. Might have to look into that myself when the trans goes in my 2003. :)

Thanks atv - looks like a lot has been figured out on these sort of cross generation swaps since I've last looked into it.

No one has asked you why you want to do this, so, what are you trying to accomplish?

Tim

thanks for the response. greatly appreciated

thanks for the question Tim
when the engine gets high mileage, maybe over 100k, i like to swap with a new engine with more horsepower. its a 6600 lb hunk so extra 150 hp would be nice. putting supercharger over existing engine costs 10k, so i thought it would be logical to put new engine with supercharger ( thats very expensive though 20k)
also as an option, tuned 383 6.2 lt stroker engine ( w/o supercharger) provides 550 hp, which is cheaper and reasonable as well

100K on an LS engine is nothing in today's world. Unless its been terribly abused I would consider it just getting broken in.

If that's the path you want to take, I completely understand. I was going to turbo mine but (long story) I had a custom tune done which made all the difference in the world power wise and I also picked up mpg.

You can find belt driven super charger kits for $6000 ish including the fuel pump. Maggie style supercharger / blowers are about the same cost. Your trans will need to be built to handle it which is certainly possible. So when its all said and done you will be at $10K as you stated. You might check out the LS1Tech.com site and look at single turbo installations. They can be a lot less money but require more fab. Huron speed I think can hook you up with the hot and cold side kit for about $1800. Add the turbo of your choice and fuel system and you will be around $5,000.

The GM connect and cruise packages are a good value in that respect but the HP advertised is at an rpm range that your H2 will never see. Look at the new LT1 with the 8 speed. There are transmission mounts available to go from the 4L60 to 4L80 so that's not going to be an issue. I do not know if there is an interface between the stand alone system and the truck so you might have to be creative with the check engine light. Cooling is also probably different but certainly doable. I think I'd look for a junkyard pullout 1st and order the GM harness and computer for it.

When its all said and done it would be a sweet ride but you also would have as much in the engine as the trucks is worth. Most of us could care less about that, so it sounds like a cool project.

Tim

thanks Tim for extra info about turbo package, havent thought about it and turbo alternative sounds nice. engine in great shape so i dont think its abused. i have diablo tuner, but not custom tuned. i heard in forums some guy help with diablo custom tune for 150$.
as you said i wont be going 6000 rpm to fully benefit that advertised hp. your response, which i greatly appreciated, narrowed down my alternatives to harness more hp from existing engine, without swapping. add turbo and custom tune, whola!
one more question, how much additional hp you think custom tune would add on top of existing 395hp? ( i feel 395 is weak for H2, 500 sounds good to my ears and new magnaflow)
have great weekend bro
hakan

Get in touch with Lewis DiabLew Tune - Custom Tuning for GM Vehicles - DiabloSport inTune 2030, Diablo inTune 8245, DiabloSport Trinity, Custom Tuning by 06MonteSS, custom GM tuning

He is the man for a custom tune if you have a Diablo Sport. Will make a big difference and worth every cent.

I'm going the mods route on mine. Full long tube headers, high flow cats, full cat back (new exhaust end to end) and a custom tune made a huge difference.

I've looked at both superchargers and turbos and I'm partial to a supercharger. In particular the Magnuson TVS ones. For me the 1900 would be plenty. The plus with a supercharger (these in particular too) is they make more power down low versus up in the higher RPS ranges (I'm not as interested in going over 100 mph in my H2 lol - I'd rather have the additional power in the lower end. Of course zero lag with a supercharger too which a turbo suffers from. They are also available as a ready to go kit that with some skills you can install yourself in a weekend quite easily.

You can put on (or a turbo) on without doing anything to the transmission. Its just going to need a top notch rebuild or replacement eventually and with the extra power that eventuality will come a bit sooner. That makes the financial pain a bit easier if you can do the trans a bit later...

Even excluding both a turbo or supercharger you can still get these engines upwards of 500HP with some other mods like better heads and a mild cam, exhaust, tune, etc. I'm going at it a little at a time is all but I'be been keeping an eye out for a used (not abused) supercharger. I've seen them go used for as lower as a couple of thousand to around $4500. At $4500 I'd just spend the extra grand or so and get a brand new kit versus used.

For a 2008/2009 Hummer H2 / H2 SUT 6.2L V8 Radix Supercharger System

$5795 to bolt 120HP on. Shop it around and you can probably get the kit for a few hundred less. That complete new kit includes a handheld tuner with a custom tune and everything to get going.

thanks for great info. i will change the headers and get it tuned ( i already havemagnaflow) and see hows the hp. you are right, 530 hp at 6000 rpm wont do it for me either, since i wont be going that fast.
thanks for the link, i will get in touch with diablo tune guy, and with headers and camshaft, lets see how much hp im getting. of course supercharger would be icing on the cake. i will be shopping around for used one in good conditions, as first option
thanks again for response, thats why i like this forums,

I don't know how much hp my custom tune added but it is night and day different from the stock tune. I don't know everything he did but the biggest issue the stock tune had was a lack of any timing advance. My truck at part throttle was pulling a NEGATIVE 2 degrees of timing. He moved that to 20 degrees advanced. It will take more but on a 100 degree day in FL I was afraid I'd kick the knock sensors off. It also no longer has to kick down a gear to get over a bridge or incline. I do run 93 octane in it most of the time but I can get by with 91 even on a hot day. He also changed some shift points for the trans.

I'm not certain a Diablo tune will do all that but if it will I would go for it. There is also a company out there called Black Bear I think that will send you a pre programmed ECM based on your performance desires, I think they are $150 but have never used them.

In the end, I am a gear head and love performance but I am content with my truck as it sits. I realize its like driving a sheet of plywood down the road so it will never be fast but the tune made mine pleasurable.

Tim

so when it comes to tuning, either i will take it to custom tune shop, or get help with my diablo tuner to have it custom tuned. i am not trying to go over 80 mph , just trying to get more hp. then again, once custom tuned at shop, diablo tuner would be off ( except for tire sizing, tyranny ratio changes, and code reading)
which one is better ; custom tune at shop, or diablo custom tune for 150$ ?
thanks guys for all the help and support

I might be wrong but I think the Diablo tune is a plug in device. Find someone who can reprogram the ecm, not just control a few parameters with buttons. If you are savy enough, buy HP Tuners and play with it yourself. I've never been a computer guy so I just paid a local guy to do mine.

I looked at the link given above, it is a custom tune for your ecm so it would be a good route to take if you don't have anyone local.

Tim

The Diablo Sport devices (InTune / Predator) do have full on tuning software capabilities just like EFI Live and HP Tuners... Also just like those others it costs quite a bit more to get that full capability and its a pretty big learning curve. The Diablo devices do make it easier for the end user for certain things though as there are a number of parameters that are easily adjusted right on the device for things like shift points, setting a specific tire size for correcting your speedometer and of course some basic (but still very good) pre-made tunes.

Just like EFI Live and HP Tuners, with a Diablo you will still get the best results by having a specialist do a full custom tune in person on a dyno. Next best is a full custom remotely created tune - for Diablo devices, the guy I linked to above is the most popular.

With a Diablo you would do some specific logging as instructed by Lewis. Then send him the logs. He will send you back an initial custom tune. You then run that for a couple of weeks to let it settle in then do some more logs including a couple of WOT runs and send him those logs. Then he will build a final more refined tune and send you that back to load.

On any custom tune, in person, mail order, email, etc it is also best to have most of your mods like headers, new plugs, wires, O2 sensors, etc all done before you start the custom tuning so that the custom tune can account for the mods and take the maximum advantage of them.

I did mail order tune from Blackbear performance, only after i put on dynatech long tube headers, airdoc (afe powercore filter in the ORIGINAL box) and a borla cat back. My experience and thoughts are here:

https://www.hummerforums.com/forum/h...catback-36194/

Very easy to work with Justin at Blackbear. We exchanged a couple of emails, and then we amended the tune a couple of times. If I was close, i would pay for a custom tune, but am in Russia, so it's not so easy. More than pleased, and would use again.