I'm going to do the LBZ/6 speed swap into my truck when my house sells (maybe never!) I have seen a few engine tranny combos for sale for about 6-7K. Do you guys think I could sell my LB7/5 speed when I was done?

What would a 180K mile motor and tranny like mine fetch on the open market? Reminder, it needs injectors. smoking at idle... blah blah blah.

mayb 3500 to 4k if i was you i would just keep the motor rebuild it as a race motor the lb7 has alot more potential then the lbz if its built right as for the trans i think you can get it rebuilt as a 6 speed through ats or ppe

mayb 3500 to 4k if i was you i would just keep the motor rebuild it as a race motor the lb7 has alot more potential then the lbz if its built right as for the trans i think you can get it rebuilt as a 6 speed through ats or ppe


X2, why does everyone want to swap a LBZ into their LB7 truck?? Its a nightmare, and all to end up with a different set of issues, instead of injector problems it will melt a piston. You will have to contend with all the emission control devices and changing the complete engine, trans and body harness......no thanks. I have seen LB7's LLY's LBZ's and LMM's all go FAST and make POWER, if you tune/build them right they will all make just as much power. Hell I think some of the fastest and most powerful Dmaxes are the old LB7's.......oh yeah and we get the best mileage too.

Use the money you were gonna spend buying the LBZ/6sp and dump it into your LB7........you'll be glad you did.

X2, why does everyone want to swap a LBZ into their LB7 truck?? Its a nightmare, and all to end up with a different set of issues, instead of injector problems it will melt a piston. You will have to contend with all the emission control devices and changing the complete engine, trans and body harness......no thanks. I have seen LB7's LLY's LBZ's and LMM's all go FAST and make POWER, if you tune/build them right they will all make just as much power. Hell I think some of the fastest and most powerful Dmaxes are the old LB7's.......oh yeah and we get the best mileage too.

Use the money you were gonna spend buying the LBZ/6sp and dump it into your LB7........you'll be glad you did.

He speaks the truth...

mayb 3500 to 4k if i was you i would just keep the motor rebuild it as a race motor the lb7 has alot more potential then the lbz if its built right as for the trans i think you can get it rebuilt as a 6 speed through ats or ppe

Why do you say that?

I 100% disagree.

ben

X2, why does everyone want to swap a LBZ into their LB7 truck?? Its a nightmare, and all to end up with a different set of issues, instead of injector problems it will melt a piston.

with the right tuning and twins it is possible to get the LBZ pistons to live.

You will have to contend with all the emission control devices

how long does it take to shutoff the EGR with EFILive? About 2 minutes.. So whats left, the cat and PCV? Not hard to get rid of those either..

and changing the complete engine, trans and body harness......no thanks.

no you dont...if you have a 2003-2005 LB7/LLY, the LBZ is a 100% plug and play swap. The body harnesses all match. 2001-2002 LB7 to LBZ swap is more or less impossible because the body harnesses of the 01-02 trucks are completely different than the 03-07 trucks.

I have seen LB7's LLY's LBZ's and LMM's all go FAST and make POWER, if you tune/build them right they will all make just as much power. Hell I think some of the fastest and most powerful Dmaxes are the old LB7's.......

that was because a long time ago the programming was not figured out for the LBZ. Now that programming is all figured out you are going to see (and are seeing already) people dumping LB7/LLY stuff for LBZ-based stuff. The LBZ ECM is 10x smarter and better at processing things, and can turn 5,000+ rpm without even sweating. You will be hard pressed to make an LB7/LLY setup with the FICM turn over 4,800rpm reliably and accurately. And you get the 6-speed trans etc.....

oh yeah and we get the best mileage too.

Use the money you were gonna spend buying the LBZ/6sp and dump it into your LB7........you'll be glad you did.

the mileage thing is debatable...As of right now there are nothing the LB7 can do that the LBZ cant do as well if not better. And with the LBZ you dont have injector issues. ;)

The ONLY downside to the LBZ is there is no switchable EFILive tuning available for it yet. If the LBZ had switchable-on-the-fly tuning available, I would have switched to LBZ controls a LONGGG time ago. The LLY ECM is a PITA.

just my opinion.

ben

I'm not saying it isn't possible, but why??? If you want an LBZ buy an 06-07 truck, by the time you get done you will have spend alot more money to make the same power. Just doesn't seem to make sense to me.

wowzers! That was a lot of responses. I am no diesel fanatic (yet) but I was am still under the impression that the LB7 has design flaws in the injetor realm and no matter what you do, you can still experience injector failure after 30K or 20K or even 10K. I am not about the spend 2-3 thousand dollars and at least a weekend of my time to fix a problem that isn't really fixed. As for making crazy horsepower... uhh, no thanks. This is my work truck. 50-60 thousand miles every year, off road 25% of the time, lots of sitting in traffic and parked at idle. I'm not building a pulling truck. I just want a reliable rig with good power and NO CHOKING WHITE SMOKE AT STOP LIGHTS!!! I was under the impression that an LBZ swap was the way to achieve my goals. Anyone out there know if a swap is the best and long term cheapest way to acomplish this?

Even if you shut off the egr you still have the cooler in the way

The LBZ pistons are $hit

i wouldn't trust a stock lbz over 500rwhp for very long

I like LLY's more than LBZ's

LMM's are complete junk if you want alot of power

If you plan on not running alot of power the LBZ is a good choice

But if you can do a engine swap you can replace injectors

Even if you shut off the egr you still have the cooler in the way

so man up and buy the 6 dollar blocker plate.........


The LBZ pistons are $hit

i wouldn't trust a stock lbz over 500rwhp for very long


he just said he didnt care about high hp, but he did drive lots of miles...which means he would rather have no injector problems than pistons that hold together at 550+ rwhp...


I like LLY's more than LBZ's

WHY?????? LLY's have no redeeming qualities whatsoever. There are hardly any LLY's making big power. The ECM's suck and are a PITA to tune around the dozens of defueling tables they have, among other issues.

LMM's are complete junk if you want alot of power

ummm since when? Thats BS, take off the DPF, put a tune on it, and other than that, its the same damn engine as an LBZ. :rolleyes:

But if you can do a engine swap you can replace injectors

are you forgetting the COST of doing injectors...?

Jeez lots of LB7 kool-aid drinkers in this thread! :stirthepo: :D

I say convert to an LBZ and dont look back. And you guys cant say Im biased to the LBZ, because I have an LLY (well, sort of)

ben

Just change out your injectors with some after market ones if thats your problem with your motor now and put on a better filtering system it seems like if your injectors keep going out its because your fuel that your getting is dirty ???

From my readings on the newer engine swaps done on this forum this is what stands out to me:

1. Use an '03 or new truck due to the electrical harness being more adaptable than
the older trucks.

2. You can't use an LBZ ECM with an LB7 transmission TCM due to the to the LBZ
ECM being tightly coupled with the LBZ transmission TCM

3. LLY ECM works with an LB7 transmission TCM

4. LLY swap seems more plug-n-play

Fwiw and by no means I'm an expert or even claim to be knowledgeable in these
engine swaps.

Rey

Just change out your injectors with some after market ones if thats your problem with your motor now and put on a better filtering system it seems like if your injectors keep going out its because your fuel that your getting is dirty ???

no....thats not true.

For the 100th time, aftermarket injectors and better filtering systems DO NOT CURE THE LB7 INJECTOR PROBLEM!!!! They will still fail sooner or later.

ben

5so man up and buy the 6 dollar blocker plate.........

That doesn't get rid of the cooler it still there in the way



he just said he didnt care about high hp, but he did drive lots of miles...which means he would rather have no injector problems than pistons that hold together at 550+ rwhp...




WHY?????? LLY's have no redeeming qualities whatsoever. There are hardly any LLY's making big power. The ECM's suck and are a PITA to tune around the dozens of defueling tables they have, among other issues.

If you don't care about power the LbZ is better I wouldn't say the LLY has no redeeming qualities

It doesn't have LB7 injector problems and LBZ piston cracking issue

But I would say that about the LMM the new trucks are nice but the motors are weak and and anybody that thinks that emmissions testing diesels will not become the norm are drinking Kool aid




ummm since when? Thats BS, take off the DPF, put a tune on it, and other than that, its the same damn engine as an LBZ. :rolleyes:

They are supposedly the same engines but most of the blown engines I have seen lately are LMM's

It does not make sense but it is a fact



are you forgetting the COST of doing injectors...?

In his case if he keeps the truck a really long time it will pay for it self.

In my case I would rather replace injectors than drop $10,000 on a built motor because I cracked a piston

Jeez lots of LB7 kool-aid drinkers in this thread! :stirthepo: :D



I say convert to an LBZ and dont look back. And you guys cant say Im biased to the LBZ, because I have an LLY (well, sort of)

ben

no....thats not true.

For the 100th time, aftermarket injectors and better filtering systems DO NOT CURE THE LB7 INJECTOR PROBLEM!!!! They will still fail sooner or later.

ben
If you've done enough research, you would know that it's only 50% of LB7s that have injector problems.

That doesn't get rid of the cooler it still there in the way

Of what????? So take it out and and spend 10 minutes make a second blocker plate? What is the big issue here??

Isnt yours blown up/parked right now? I thought LB7's were badazz and unflappable? :p:

If you don't care about power the LbZ is better I wouldn't say the LLY has no redeeming qualities
It doesn't have LB7 injector problems and LBZ piston cracking issue

you obviously have zero experience with tuning LLY's and trying to make big streetable power with LLY's. :(

But I would say that about the LMM the new trucks are nice but the motors are weak and and anybody that thinks that emmissions testing diesels will not become the norm are drinking Kool aid

Are you trying to say that LMM's are not desirable because they have lots of emissions stuff from the factory that you "wont be able to take off because it will fail an emissions test"?? Am I understanding you correctly? My truck passed with flying colors all across the board (as clean as clean can be as far as the DMV is concerned) with big injectors, twins, tune, lower-than-stock-LLY compression, and they had no problem with the EGR and Cat missing.

They are supposedly the same engines

supposedly? um no, THEY ARE. Ive seen the insides of both; THEYRE IDENTICAL save for the intake throttle body, DPF, and the injectors have 1 less hole.

but most of the blown engines I have seen lately are LMM's It does not make sense but it is a fact

Well what do you think that means? NOTHING. Because they are the same darn engine. I have not seen any evidence of LMM's failing more often than LBZ's. Thats like saying 2004 LLY's are more likely to blow up and fail more often than 2005 LLY's.

in my case I would rather replace injectors than drop $10,000 on a built motor because I cracked a piston

I see you are still glossing over the fact that HE DOESNT WANT TO RUN BIG POWER. So in that case having weaker pistons doesnt affect him... Also, he drives 50-60k a year. If you are unlucky and have one of the "really bad LB7's", that COULD be 1 set of injectors per year (Now I dont want to hear all the LB7 guys protesting and chiming in here "WELL BEN MY LB7 HAS 120k ON ORIGINAL INJECTORS SO POO ON YOUR THEORY", as I said 60k on a set is the worst case scenario), so I think 10,000 dollars would come up faster than you would think if he keeps his truck a while. And not to mention the down time. With an LBZ, keep the power below 500rwhp and you never have to worry about anything. With an LB7 you always have to live in fear that injector doomsday is just one day closer everytime you wake up in the morning...

But hey, what do I know...I have a silly LiLlY!

just my opinion.

ben

If you've done enough research, you would know that it's only 50% of LB7s that have injector problems.

Was that supposed to be a joke? Or just wishful thinking?

Wow this got out of hand fast. Hey if you wanna do the swap then more power to you, good luck with it.

Well, now I don't know what to do. Had no idea that this was going to stir a pot! LOL. Well here's another question then for you guys that have replaced 1... 2... maybe three sets of injectors. After all the time and money involved with those replacements, do you wish you would have just put in a different motor? Maybe just a head swap to run a newer version of the injectors? Just fishing for ideas here. As I stated, I still can't do anything till my house sells. NO MULA!

HEY! I JUST BECAME A DIESEL FANATIC!!! I guess you have to post at least 50 times! cool.

How many times have you blown up your truck Ben?

I am sure it wont be long with the LBZ in there that it is blown up again

I guess the fact that you have a LBZ short block in your truck makes you feel you have to try to justify the fact it is a weak engine.


I have 165,000 miles on my LB7 it is costing me $1000 dollars to fix the head gaskets

When you see a LBZ with 165,000 miles making 550+ whp and still in one piece then come talk to me.


Oh by the way my truck has the originial injectors still




I wasn't glossing over the fact he doesn't want to make big power.

Thats why I saild
"in my case I would rather replace injectors than drop $10,000 on a built motor because I cracked a piston"

If he is staying stock more power to you if you want to swap engines


:beerchug: I guess we can agree to disagree Ben

I think 180,000 mile LB7 with bad injectors is worth 2k tops

How many times have you blown up your truck Ben?

I am sure it wont be long with the LBZ in there that it is blown up again

wow you will never get a nice response in any thread from me again. That was below the belt and until you go through the hardship of having your (only vehicle) truck down almost 7 months in a year because you have no money, getting screwed by a guy who sold you shitty rods, having to walk everywhere in -20* winter (you will never know that, seeing as you live in arizona where the sun always shines and people say they are cold when its 50*), then STFU. I wouldnt wish my situation on my worst enemy. At least it doesnt take me 8 hours to pull a valve cover, at the end of which I still break it.

I guess the fact that you have a LBZ short block in your truck makes you feel you have to try to justify the fact it is a weak engine.

No, I have an LBZ shortblock because that was my only option because I didnt have money to do it the way I wanted to. Thats what happens when you're a sucker like me and buy into some rods that look fancy on paper. Not my fault. Im running my LBZ with a stock tune.


I have 165,000 miles on my LB7 it is costing me $1000 dollars to fix the head gaskets

I never blew head gaskets on my LLY and I was making a shitload more power 3 1/2 years ago then you are now. Does that 1000 dollars include replacing the valve cover that you couldnt remove without breaking?


When you see a LBZ with 165,000 miles making 550+ whp and still in one piece then come talk to me.

go see IdahoRob, no he doesnt have 165k miles, but he is certainly making more power than 90% of the people on here.


To everyone else in this thread, get off the LB7 koolaid. The injectors suck and if you are going to keep one passed 150k, I wouldnt bother because yes, warranty will cover it, but it sucks having the truck down for a week while its at the dealer...what if you are driving across the country and they crap out?

"OH well they will hold the pistons together at 550rwhp"

yeah well your guys' injectors will fail even when the motor is stock, how inconvienient is that. I can control the destiny of my pistons, can you guys control the destiny of your injectors? No, dont answer that.

As for the piston argument, then buy an LLY; you'll have strong pistons and injectors that wont fail.

If I had an LB7 I would swap to LLY or LBZ stuff the first chance I got. Doing injectors often if you drive a lot of miles a year is going to get annoying.

just my opinion.

ben

wow you will never get a nice response in any thread from me again. That was below the belt and until you go through the hardship of having your (only vehicle) truck down almost 7 months in a year because you have no money, getting screwed by a guy who sold you shitty rods, having to walk everywhere in -20* winter (you will never know that, seeing as you live in arizona where the sun always shines and people say they are cold when its 50*), then STFU. I wouldnt wish my situation on my worst enemy. At least it doesnt take me 8 hours to pull a valve cover, at the end of which I still break it.

you hardly ever have a nice response to anything you say no matter who you are talking to. So that wont be much of a change.


What are you supposed to do when a allen head strips and there is no room to get anything back there to remove it you are just trying to make me look incompetent it could happen to anybody. Next time I will break the valve cover off right away to make you happy


No, I have an LBZ shortblock because that was my only option because I didnt have money to do it the way I wanted to. Thats what happens when you're a sucker like me and buy into some rods that look fancy on paper. Not my fault. Im running my LBZ with a stock tune.

It sucks about your rods but you attacked me on my misfortune first

I never said you can't blow up a LB7 but 99.9999999% of the time a LBZ will blow up before a LB7 or LLY will


I never blew head gaskets on my LLY and I was making a shitload more power 3 1/2 years ago then you are now. Does that 1000 dollars include replacing the valve cover that you couldnt remove without breaking?

Where are your dyno numbers or 1/4 times to back up your mouth


go see IdahoRob, no he doesnt have 165k miles, but he is certainly making more power than 90% of the people on here.


To everyone else in this thread, get off the LB7 koolaid. The injectors suck and if you are going to keep one passed 150k, I wouldnt bother because yes, warranty will cover it, but it sucks having the truck down for a week while its at the dealer...what if you are driving across the country and they crap out?

"OH well they will hold the pistons together at 550rwhp"

yeah well your guys' injectors will fail even when the motor is stock, how inconvienient is that. I can control the destiny of my pistons, can you guys control the destiny of your injectors? No, dont answer that.

As for the piston argument, then buy an LLY; you'll have strong pistons and injectors that wont fail.

That is what I have said the whole time

If I had an LB7 I would swap to LLY or LBZ stuff the first chance I got. Doing injectors often if you drive a lot of miles a year is going to get annoying.

just my opinion.

ben
1

Was that supposed to be a joke? Or just wishful thinking?
Like I said Reseach.:rolleyes:

Does anyone have plain old, everyday, daily driver advice for me? Injectors or LBZ swap? The most power I will EVER make is 450hp. WORK TRUCK!!!

Maybe I'll just go get a gas F-150 again. That one lasted 160K and is still running strong. Sold it to an employee... dumb.

Does anyone have plain old, everyday, daily driver advice for me? Injectors or LBZ swap? The most power I will EVER make is 450hp. WORK TRUCK!!!

Maybe I'll just go get a gas F-150 again. That one lasted 160K and is still running strong. Sold it to an employee... dumb.


Mr. 16,000 posts has all the answers

If anybody else says anything they are wrong

So I will leave my opinion out because Ben will bash it anyways

Does anyone have plain old, everyday, daily driver advice for me? Injectors or LBZ swap? The most power I will EVER make is 450hp. WORK TRUCK!!!

Maybe I'll just go get a gas F-150 again. That one lasted 160K and is still running strong. Sold it to an employee... dumb.


450HP is pretty stout! Hey do what you wanna do, either way its gonna hammer with 450 rwhp. LB7 will be cheaper.

Like I said Reseach.:rolleyes:

they will all fail, show me this "research" that has shown otherwise. You are a naive idiot if you think your LB7 is magically immune to injector failures.

they will all fail, show me this "research" that has shown otherwise. You are a naive idiot if you think your LB7 is magically immune to injector failures.




I liked the 50 percent quote some guy said:rolleyes:
Something you guys don't realize is that Ben knows a shit load about these trucks. Nobody knows everything but dollars to donuts I have seen lots of posts by members and Ben guides them in the right direction. KEVINL, I think you just made a gigantic mistake pissing off Ben, good luck in getting help.

That said, every truck with these injectors will fail. There is no miracle cure to making fuel injectors last forever. If you can find a miracle do it and then show GM your resume because you should be an engineer.

I am sorry but I think its wrong that Ben got dissed he's a cool guy.

I liked the 50 percent quote some guy said:rolleyes:
Something you guys don't realize is that Ben knows a shit load about these trucks. Nobody knows everything but dollars to donuts I have seen lots of posts by members and Ben guides them in the right direction. KEVINL, I think you just made a gigantic mistake pissing off Ben, good luck in getting help.

That said, every truck with these injectors will fail. There is no miracle cure to making fuel injectors last forever. If you can find a miracle do it and then show GM your resume because you should be an engineer.

I am sorry but I think its wrong that Ben got dissed he's a cool guy.


I have never needed his help before and will never need it in the future.

There are plenty of people willing to help without the attitude

:eek: damn this one turned nasty , the lbz is a great swap if you want to do it . The LB7 is just fine for me ............... 2001 still original injectors . but some trucks really chew through them . best of luck what ever you decide .

If the only thing your worried about is the injectors just swap for lly heads. You still have to swap the ecm and all the fuel injection related crap, but it beats the hell out of swapping the motor if all you're worried about is injectors. I am by no means an expert, but every generation seems have their problems/drawbacks.

Why not trade your truck in for a LBZ if that is what you want? Take the 7 to 10 grand you plan on spending and use that with the money you get for your old truck to buy another one. The swap would be a lot of time and effort wasted in my opinion. Or swap in a new set of injectors if you can't get them warranted and add a secondary filter in the 2 to 3 micron range. Buy a five gallon pail of Stanadyne Performance Formula and use some every tank. That will not guarantee that your injectors will live, but it will greatly improve your chances.

I might be willing to do the swap for an LBZ motor and 6 speed tranny in my 04 instead of replacing injectors if it truely is plug and play - assume a person would need the ECM, TCM and FICMs with the LBZ to swap, correct?

Will the LBZ in an 04 get the fuel economy that the 06 does or like the 04 (LB7's get better economy generally speaking, I'm guessing a person would get O6 Economy since it's lower compression and using the 06 ECM)

I would say sell the truck or just fix the injectors. I was in the same dilemma as you and in todays economy for me it was better to just change the injectors plus I have the truck just about the way I want and did not want to start over. Good luck with what ever you decide.

I am thinking that maybe injectors is a better route now too. That's a lot of work to do an entire engine and tranny. I might start another thread about multiple injector failures. I think my failure is just due to old ass injectors, not the body cracking, so maybe I can get another 100K out of this set if I do it.

If u feel its necessary and financially feasible do the injectors and get good ones.

My truck went 85k on the stock injectors, hopefully another 85k on the replacments!! By then someone should come out with a "better" replacment. If I have to I will just put stock replacements again. I love this LB7!!!!!!!

Where is everyone getting their injectors anyway? I'd feel better using new ones insted of rebuilt ones. Just a thought.

You can't even get new injectors they are all remans

Sure about that? I know Merchant and a few others sell new ones also.
http://www.hdiesel.com/product.asp?id=140

Read the box in the picture;)

Where is everyone getting their injectors anyway? I'd feel better using new ones insted of rebuilt ones. Just a thought.

Here is a suggestion. ;)

http://www.hdiesel.com/product.asp?id=140

Sure about that? I know Merchant and a few others sell new ones also.
http://www.hdiesel.com/product.asp?id=140

Posted before I got to the second page. Thanks!

Becareful on what you find out there and are called remanufactured. Bosch does not recognize the available test equipment on the market. Be sure you go with a reputable company and not just some ebay specials.

seeing as you live in arizona where the sun always shines and people say they are cold when its 50*



Me and my LLY will c0ck slap you so hard.

50* IS cold!

I don't think it really matters what engine you go with/have if you aren't going to build it for gobs of power. I love my LBZ but my dads LB7 serves him just fine other than I believe he has some bad inj now. He has 150K on the stock ones so that was a pretty good run I guess. If it was me personally and I was putting tons of miles on a year and had to put a couple sets of inj in I would be looking for an alternative, wether it be a LBZ or a different LB7, or just swaping heads.


Me and my LLY will c0ck slap you so hard.

50* IS cold!

HAHA you poor southerners. 50 is perfect t-shirt weather, the -40* we had last winter was pretty cold.

no you dont...if you have a 2003-2005 LB7/LLY, the LBZ is a 100% plug and play swap. The body harnesses all match. 2001-2002 LB7 to LBZ swap is more or less impossible because the body harnesses of the 01-02 trucks are completely different than the 03-07 trucks.
ben

It's not 100% plug and play; it's about 99%. on the Fuse block C2 connector you need to move the orange wires (for the TCM) from position A8 to position F4, and on C100, on the truck side, you need to remove two or three wires that aren't used (only used on the 8.1, I believe), move one wire and add three (GMLAN+, GMLAN- and Tap-shift). THEN the 06 harness will be Plug and Play.

the -40* we had last winter was pretty cold.

:eek:

I'd say "F this place"

I see it this way, if you are going to drive it not build it. Which you are.
Something like exhaust, intake, boost, and a pyro guage are about all you really need.

Not to get into the argument or start it agian, but seems to me like Ben is not only biased but has one H(*^ of an attitude.

You can see in my sig I have an 03 other then the exhaust it is completely stock. (have some guages and whatnot to put in just need the time).
Bought it from an old guy pulled a camper, he had minor stuff done to it, filter, fan belt, rear brakes. Injectors still kicking at 93,000. The more I look on this site the more I see over 100,000 mile LB7's with factory injectors. I would take a wild guess that 50% may be the one's that have problems. It's just a common problem like the intermediate steering shaft, transfer pump rub, guages, e-brake on disc rear. Yet we all have one but we still buy and keep them with all these problems. Why???
Their is a fix (actuall fix) for them. I will agree that injectors are kinda an iffy one. That my just need some time to be worked out.

To change the engine cause of the injectors. To much work. If you were talking a carbed gas engine, go for it same trans fuel system bolt in project. Anything nowdays, reprograming the comp, changing wiring harnesses, updating fuel systems, putting in the ecu, taking the time to get the wiring harnesses together right. It's to much work for an everyday car/truck. Save all that for a project, sell your truck trade it and buy a newer one, or fix it.

Me and my LLY will c0ck slap you so hard.

50* IS cold!

im confused by that comment? Who says I dont have an LLY?

Me and my LLY will c0ck slap you so hard.



I'll be your hucklberry :D

wow thats some heated discussion in those last few pages! I think all these motors have their own faults, it just depends on what you are gunna use teh truck for that will determind what certain motor is best suited for ya. Obviously im a little biased to the LB7 as thats what i have and yes i have had good luck with my injectors, my motor seems to like a quart of 2 stroke oil with every fill up and balance rates are all under 1 w/ 133K on the clock but i guessin i got a good one. I also will be replacing the injectors myself should they go out so thats a chunk of change i save. i just like keeping everything together the way it came let alone i love the styling of the 01-02 HDs. (im thinkin in 30-40 years these bad boys will be like the 69-72 chevys :D)

If you have the time and are skilled enough to change the injectors yourself id stick with the LB7 otherwise an LBZ swap may be a great idea for ya. ITs what you feel will be the most reliable to you for what you do. I think there is enough information in this thread now to help point ya in theright direction. I know Duratothemax has givin some great info here.

Jeez lots of LB7 kool-aid drinkers in this thread! :stirthepo: :D

ben

If you dont like it maybe you should frequent the LBZ section, you are after all in the LB7 section :cool:

Does anyone have plain old, everyday, daily driver advice for me? Injectors or LBZ swap? The most power I will EVER make is 450hp. WORK TRUCK!!!


Hey Griz -

I think my truck is similar in use to yours. I have owned my 2001 LB7 since new and it now has about 125K miles. It is my daily driver and I haul doubles (5ver and 20' boat) and am always towing something around. I had the injectors replaced at 70K miles and so far they are holding out fine. The truck has been great and I would rather tackle the injector replacement than swap engines but that is just me. I have this truck for almost 9 years and the injectors and water pump were the biggest maintenance issues (both handled under warranty). Other than that it is rock solid. I run various tunes on the truck depending on whether I'm towing or not.

Before I'd pay a dealer $7K to replace my injectors, I'd tackle it myself. I would rather have the truck in my garage for two weeks (riding my motorcycle to work) than hand over that much money to a company the has produced a flawed design with injectors.


Good luck!

Phil B.

wow thats some heated discussion in those last few pages! I think all these motors have their own faults, it just depends on what you are gunna use teh truck for that will determind what certain motor is best suited for ya. Obviously im a little biased to the LB7 as thats what i have and yes i have had good luck with my injectors, my motor seems to like a quart of 2 stroke oil with every fill up and balance rates are all under 1 w/ 133K on the clock but i guessin i got a good one. I also will be replacing the injectors myself should they go out so thats a chunk of change i save. i just like keeping everything together the way it came let alone i love the styling of the 01-02 HDs. (im thinkin in 30-40 years these bad boys will be like the 69-72 chevys :D)

If you have the time and are skilled enough to change the injectors yourself id stick with the LB7 otherwise an LBZ swap may be a great idea for ya. ITs what you feel will be the most reliable to you for what you do. I think there is enough information in this thread now to help point ya in theright direction. I know Duratothemax has givin some great info here.


I like the way you think!!!

I like the way you think!!!

Yeah boy! I just got feelin its gunna happen :D

wow thats some heated discussion in those last few pages! I think all these motors have their own faults, it just depends on what you are gunna use teh truck for that will determind what certain motor is best suited for ya. Obviously im a little biased to the LB7 as thats what i have and yes i have had good luck with my injectors, my motor seems to like a quart of 2 stroke oil with every fill up and balance rates are all under 1 w/ 133K on the clock but i guessin i got a good one. I also will be replacing the injectors myself should they go out so thats a chunk of change i save. i just like keeping everything together the way it came let alone i love the styling of the 01-02 HDs. (im thinkin in 30-40 years these bad boys will be like the 69-72 chevys :D)

If you have the time and are skilled enough to change the injectors yourself id stick with the LB7 otherwise an LBZ swap may be a great idea for ya. ITs what you feel will be the most reliable to you for what you do. I think there is enough information in this thread now to help point ya in theright direction. I know Duratothemax has givin some great info here.


I agree! I think it will be fun to see in 30 years how we look back on our trucks that are "new" today...

Wow reading the last few pages some of you guys are pretty hot headed. Im not Looking to start another argument between you but my question is: i have and 04 Gmc LB7 has 95000 miles runs without a flaw. my only thing is i wana have some more horsepower and also i want a variable vane turbo. Now, i was thinking of doing the swap. from what i have read( and im farely new to this) the injectors are a big issue. Need Help. Need some honest opinions. Thanks, Johnny

Brayden Fleece Sells a controller to put a Varaible vane turbo on a LB7

The injectors are always gonna be a problem with the LB7

It is cheaper to keep the LB7 unless you are going to have the truck a long long time

How much horsepower do you want?

I believe the LB7 holds up better at high horsepower levels than the LBZ would but if you are going for big power eventually you will need to build a motor

Brayden Fleece Sells a controller to put a Varaible vane turbo on a LB7

The injectors are always gonna be a problem with the LB7

It is cheaper to keep the LB7 unless you are going to have the truck a long long time

How much horsepower do you want?

I believe the LB7 holds up better at high horsepower levels than the LBZ would but if you are going for big power eventually you will need to build a motor

How would i contact him and how much expense am i looking at? well not a whole lot but i wouldnt mind have the 360 stock. right now im running a ppe on my lb7 on stage 2 (90). which adds up to be a little over 400 hp with my other mods i think. and i will probably have the truck for a long time

He is a site vendor

You are going to need a built tranny regardless which motor you go with if you want some real power

The stock vnt turbo isn't worth the upgrade over the IHI but they do sound sweet