2024 Lb7 duramax years

The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ... . Never been chris'd cast

Cash purchases by home buyers were down slightly at the end of last year after peaking to about 32% in November, according to Redfin. By clicking "TRY IT", I agree to receive newsl...With all the upgrades, Perry’s Duramax is making somewhere along the lines of 1,400-1,500 horsepower, with a long-term goal of adding a compound-turbo setup and getting closer to 1,800-2,000 horsepower on fuel only. Diesel of the Week is sponsored by AMSOIL. If you have an engine you’d like to highlight in this series, please email Engine ...Mar 21, 2023 · The 6.6-liter Duramax LBZ was a short-lived engine only available for two model years. To meet increasingly strict emissions standards, the LBZ was a more aggressively tuned version of the previous LLY engine. Mechanically, the LBZ used the same Duramax parts as the LLY, but the LBZ generated 360 horsepower, while the LLY only generated 310 ... Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Performance Parts Discussion. What year of Duramax did this come out of? (Intank module) Jump to Latest Follow 3K views 6 ...12 posts · Joined 2008. #8 · Sep 27, 2008. LB7 Engine life continued. Symptom; a very small loss of coolant, no power loss and no real measurable loss of coolant. 3 diesel mechanics with a total of 70 years experience between them, 2 with 15 years on the GM 6.2, 6.5, LB7, LLY, LBZ, LMM engines.SOLD - 2003 Silverado CCSB LB7, stock (for now), PPE Boost Valve, Hypertech Power Programmer III, GN, 285/75R16E BFG A/T's. With a new oil change the oil PSI would be a steady 60psi but towards the end of the oil change interval (with diesel in the oil) it would be about 45 psi.Dec 28, 2014 · Louisburg, KS for now. Jan 7, 2015. #6. If someone wants to send me one with a rise on it, I'll cut it off and weld it up like it was never there and send it back. That way we'll and I'll know for sure that the LLY-LMM fit on an LML. Just pay for shipping. I'm pretty sure they do being Rick tested all his stuff on the 2011 LML he had, but I'm ... Up by 13% so far this year, the market is having its best start in over two decades. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners...Nov 27, 2017 ... ... ideas is generated from our listeners. 1,200HP Duramax LB7 - JOY RIDE. 37K views · 6 years ago ...more. Diesel Performance Podcast. 6.94K. Today we're going to go on a journey and look at every Duramax engine that GM has built, from the LB7 all the way up to L5P. We're going to look at what make... LB7 Duramax was the first of its kind and it was made to near perfection despite having a few kinks as it was the pioneer. It should be noted that the term “LB7” simply means that the engine was manufactured and established in …The We Company (WE), formerly called WeWork, is going public—and we’ve got lots of questions. The initial public offering filing of WeWork is the most audacious prospectus that we’...Let’s take a look at the highlights of other powerplants within the Duramax family that are reliable. LB7 2001-2003. This engine is getting to be pretty old now, but it is still powerful and reliable. So, it’s a good candidate for what are the best years for the Duramax. Because of its age, it’s probably the cheapest Duramax engine around.The joint venture (and resulting engine) was known as Duramax, and the LB7 was the first of many models to come. It’s a 6.6-liter, common-rail injected, 32-valve, V8 turbodiesel which put out 235hp and 500 pounds of torque in its first year, and for the final year of ‘04 the LB7’s output had grown to 300hp and 520 pounds of torque. When ...Well, for starters, even in its best year, 2004, the LB7 Duramax can hardly compete with today’s modern diesels. They offer twice the horsepower, torque, and tow capacity of the original Duramax. It doesn’t have to stay that way though. The 15 LB7 Duramax performance upgrades listed below significantly improve the drivability and ...We analyzed the largest U.S cities and ranked them on four different categories to come up with the list of best cities for keeping New Year's Resolutions. Check out our full ranki...Companies, investors and others with an interest in a company often compare financial information from the same accounting period in two consecutive years to identify changes. This...Diesel52. 158 posts · Joined 2008. #9 · Aug 28, 2013. Fuel additives for LB7. Well I used about 7 bottles of Howes, didn't do a thing!!! Finally tried APL and after about 160ml for 4 or 5 tanks the truck developed power which new injectors under warranty didn't do anything.Having trouble with my LB7 and am already half the trucks cost deep in parts. Low boost. Had massive holde in the intercooler. Replaced intercooler still no boost. Pressurized charge system held 20psi for 30 seconds no leaks. Rebuilt turbo with cartridge. New turbo gaskets. Still no boost.About eight years before that fatal towing trip, the truck was fitted with a programmer, 4-inch exhaust, and an exhaust brake. ... ’01 to ’04 6.6L Duramax LB7 Torque Specifications. A/C ...Duramax LB7: 2001-2004 model years As the first Duramax model to be released, the LB7 is still very popular among diesel enthusiasts due to its lack of emission control parts. Generally, it is a very reliable and durable engine; however, once the first model hit the 100,000-mile mark, some issues begin unveiling themselves.Check out the Freedom Series cylinder heads for the LB7 6.6-liter Duramax. This all-new cylinder head features a cupless injector bore. By installing the Freedom series heads, you can actually save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting in Fleece’s state ...What Year Duramax to Avoid . These engines are not bad; they have issues that need to be dealt with. Don’t write off these engines altogether. An average Duramax is an excellent engine. LB7 2001-2004. LB7 Duramax engine that was made between 2001. and 2004. has a problem with the fuel injector failure.When it debuted in ’01 model year GM ¾-ton and larger trucks under the RPO code LB7, it introduced the segment to aluminum cylinder heads and high-pressure common-rail injection—two things that make 500rwhp possible with nothing more than a tweaked ECM (think EFI Live). The icing on the cake is that the Duramax remains durable, quiet and ...2001 – 2004 Duramax LB7: Source: turbodieselregister. The LB7 Duramax was the first generation of the V8 Duramax engine, and it did quite well. It is a 6.6-liter V8 engine with four valves per cylinder. It also has an engine block made of cast iron with aluminum heads. Overall, it was a very powerful and reliable engine.7. 38. Southern Indiana. Sep 1, 2014. #16. 01-10 will physically go in an any year block. Balancer and flywheel have to be correct for that crank. Lb7 and LLY share the same balancer and flywheel, LBZ and LMM share the same balancer and flywheel. Than of course the reluctor wheel had to be correct.6.6L Duramax Diesel Engine LB7. This original Duramax Diesel 6600 V-8 (LB7) was introduced in 2001 and was used through the mid-2004 model year. It offered a unique 32 overhead valve design coupled with high pressure direct fuel injection. The engine design included an experimental composite aluminum cylinder head. The most frequent …The VIN number can always be found on your vehicle's title or registration card. It is important to know which engine you have because not all components are interchangeable between the various versions of Duramax engines. Duramax VIN Chart. Model Year(s) 8th Digit of VIN Code Duramax Models & Notes 2001 - 20041 2 • LB7 • LLY (introduced ...Mar 29, 2017 · Found some for a 2003 LB7 to 2004.5-2005 LLY and LB7 to 2006-2007 LBZ. I think the key is that the 2006 LLY was mated to a 6 speed, unlike the 2004.5 and 2005 models. An 06 "LLY" is mechanically an LBZ... so forget the LLY part altogether. You're attempting to swap an LBZ into an LB7 truck. 2017-2019 Chevrolet HD and GMC HD trucks with the L5P Duramax have a max tow capacity of 23,300 lbs. In 2020, GM’s engineers overhauled the trucks and increased tow capacity by 52%. 2020 Chevrolet HD and GMC HD trucks with L5P Duramax engines have a max tow capacity of 35,500 lbs. Then, in 2021, slight revisions improved …After more than 15 years of progression, R&D and pushing the limits of the platform, Wade has once again raised the bar with his latest compound turbo LB7 Duramax engine aimed at 2,000 horsepower. Find out what went into the custom build! By Greg Jones. Greg Jones is Content Director and Editor of Engine Builder Magazine. …GM’s 6.6L LB7 did, however, experience considerable issues with premature fuel injector failure. Luckily, the manufacturer remedied such shortfalls with the release of an updated injector in the years that followed. Subsequently, GM also extended warranty coverage of these updated injectors to appease consumers. Duramax LB7 Specs. …Apr 2, 2023 ... LLY Duramax Problems & Reliability. 14K views · 1 year ago ... ... The LB7 Duramax - Reliability & Common Problems! ... What Is The Worst Year ...Reliability Beyond Compare: The LB7 Duramax engine is celebrated for its unwavering durability and reliability. When properly cared for, it offers years of trouble-free operation, earning its place as a top choice for commercial and heavy-duty applications. TrackTech Complete Top-End Cylinder Head Gasket / Studs Service Kit for 01–04 LB7 …Feb 22, 2023 · Here is a list of the best Duramax year models: 2010-2017 Duramax LGH. 2017-2021 Duramax L5P. 2019-021 Duramax LM2. 2014-2021 Duramax LWN. And here are the Duramax year models to avoid: 2001-2004 Duramax LB7. 2004-2005 Duramax LLY: 2006-2007 Duramax LBZ. The Duramax LB7 is a 6.6L V-8 with four valves per cylinder, a cast-iron engine block with aluminum heads, and high-pressure common-rail injection. It produced …The Instagram that got away. Despite the general consensus that Twitter is a fun place to find news, make news, and otherwise keep up with the world in real time, investors have la...Could have meant the LB7 injectors are only good till 150ish, but my best advice, is go to an AG dealer with a sample and pay them $30 to get an Oil Analysis done. It will tell you everything you need to know. -2003 CCSB 6.6 All stock, just straight piped. 235,000kms running strong. 1st set done at 205,000kms-. Like.Best Years Of The Duramax Engines. 1. LB7 (2001-2004) The LB7 was the first Duramax engine introduced in 2001, offering impressive performance with 300 horsepower and 520 lb-ft of torque. As the pioneer in the Duramax family, it brought about a new era of diesel engines for GM trucks.Today we're going to go on a journey and look at every Duramax engine that GM has built, from the LB7 all the way up to L5P. We're going to look at what make...engine and tranny wise all lb7, lly, lbz, lmm's are probably the most reliable vehicles gm makes our shop has only seen one or two allys come in with actuall issues. and the duramax besides the lb7 injectors and the occasionall cp3 pump are bullet proof. 2002 Crewcab short box 3/4 tonHD lb7 W/Allison stock, ATS DIESEL E-POWER …01-04.5 LB7 Duramax Powertrain. Please Help! Advice for Buying a 300K LB7! Jump to Latest Follow 12K ... Other garage ornament-Pearl white 2016 Subaru Legacy Limited 3.6R-6 year bumper to bumper warranty-staying stock. Save Share.Diesel52. 158 posts · Joined 2008. #9 · Aug 28, 2013. Fuel additives for LB7. Well I used about 7 bottles of Howes, didn't do a thing!!! Finally tried APL and after about 160ml for 4 or 5 tanks the truck developed power which new injectors under warranty didn't do anything.💪 WATCH THIS before buying A Used 01-04 Duramax LB7!!! Wade goes over what he looks for when buying a used Chevy/GM Duramax LB7 for the 2001-2004 truck year...Engine: 6.6L LB7 Duramax V8 with Bosch common-rail injection system. Transmission(s): Allison 5-speed automatic, ZF-6 6-speed manual. Best Year(s): Any year, as long as all 8 injectors have been replaced with genuine Bosch re-man units. Price Range: $7,000 to $15,000 Pros: Common-rail injection; Quiet operation; 450 hp is possible with a hot ...Best Years Of The Duramax Engines. 1. LB7 (2001-2004) The LB7 was the first Duramax engine introduced in 2001, offering impressive performance with 300 horsepower and 520 lb-ft of torque. As the pioneer in the Duramax family, it brought about a new era of diesel engines for GM trucks.884 posts · Joined 2009. #3 · Dec 6, 2009. If the filter change doesn't work, it could be a low fuel rail pressure. I just went through that. When the engine was under load, it would go into limp mode and throw a "fuel leak -large" code. It was my injector pump not supplying enough pressure to the fuel rail.77cruiser. 1988 posts · Joined 2011. #6 · Aug 27, 2023. I towed a 11K lb 5th with a LB7 & 90HP PPE excellerater tune for about 5-6000 miles. Then I put SAC 45 injectors with EFI live tunes & towed on the 30hp tune my 14K lb 5th wheel for about 20K miles. It had more power with the 30 hp EFI tune than the PPE 90hp.Duramax LB7 Reliability. The LB7 is a great engine, when it is stock. The block and internals are plenty capable of lasting 350,000+ miles. ... I’ve done that about 4 times in the last year and a half. Mechanics have done pressure test done twice to try and find the leak, but tests fine. Reply. Harold Lovesee says: January 10, 2021 at 9:47 am.Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing. Some of these iss...Found some for a 2003 LB7 to 2004.5-2005 LLY and LB7 to 2006-2007 LBZ. I think the key is that the 2006 LLY was mated to a 6 speed, unlike the 2004.5 and 2005 models. An 06 "LLY" is mechanically an LBZ... so forget the LLY part altogether. You're attempting to swap an LBZ into an LB7 truck.Chevrolet Silverado, which has consistently been designed with reliable engines. . The LB7 Duramax engine is a turbocharged, intercooled V8 that produces 300 hp and 560 lb-ft of torque. The engine ...Year: Description: 6.6L Duramax LB7: 8: 2001 to 2004: Duramax Engines - 6.6L Duramax Diesel Engine LB7 (2001 to 2004) 6.6L Duramax LBZ: 8: 2006 to 2007: Duramax Engines - 6.6L Duramax Diesel Engine LBZ (2006 to 2007) 6.6L Duramax LMM: 8: 2007 to 2010: Duramax Engines - 6.6L Duramax Diesel Engine LMM (2007 to 2010)Jan 1, 2019 · LB7: The O.G. It doesn’t get any simpler than the original 6.6L: the LB7. With the exception of California models, the first Duramax was effectively free of any of the problematic emissions control devices that would be introduced in the years to come. The Evolution CTS3 is an all-in-one LB7 Duramax tuner and monitoring solution. It offers tuning for improved performance with gains of up to 100 horsepower and 210 lb-ft or torque. It also has the built in monitoring capabilities of the Edge CTS3 insight. 2.RPO Regular Production Option Codes (Engine Series) There have been seven Duramax turbodiesel engines since their introduction at the turn of the new millennium: LB7 – 2001 to 2004, 300 horsepower, 520 pound-feet. LLY – 2004 to 2005, 310 horsepower, 520 pound-feet. LBZ – 2006 to 2007, 250 to 310 horsepower, 460 to 605 …The most powerful Duramax engine of the bunch is the LBZ which produces more power and torque at the least RPMs. It comes with a power output of 310 bhp at 3000 rpm. The …The LB7 is the original production 6.6L Duramax V8. Following success with the performance and reliability of the LB7, this engine became the building block of the Duramax line all the way up until today. Fuel economy on the LB7 was stout at around 20mpg and the IFS suspension included on the HD’s of … See moreAug 5, 2020 · Water Pump Failure. Fuel Filter Housing O-ring Leaks. Blown Head Gasket. Overheating (fan clutch problems, radiator gunk) In addition to the above common engine problems, there are also a few worthwhile to mention problems that affect high horsepower LB7’s: Crankshafts + connecting rods break at high hp. Description. 2001-2010 LB7/LLY/LBZ/LMM Duramax Heavy Duty Engine Mounts developed and tested for use on high horsepower application to reduce engine flex in the chassis and broken OEM engine mounts. These high performance Duramax motor mounts have been designed to maintain the alignment features of OEM mounts while adding significant …2004 Chevy 3500 CC Dually LB7 Duramax/Allison LT loaded 96k MBRP 4inch exhaust/RPI cold air intake & turbo horn. Save Share. Like. ... Seems I read an 01 would not take an 01 tune back if flashed with a newer year new. Good to know the facts. Thank you Brian . 2016 chevy ltz 3500 srw UA Steamfitter, Local 136 Evansville, IN.Feb 14, 2023 ... ... Duramax LMM vs LML 02:24 – Duramax LML Common ... What Is The Worst Year Duramax Ever Made? ... The LB7 Duramax - Reliability & Common Problems!Here is our guide to the 7 most common 6.6L LB7 Duramax problems and how to fix them. 1. LB7 Duramax Injectors. The most notorious LB7 Duramax problem is their original injectors. Even GM …Good block and rotating assembly. Injectors are the only weak part really. The fixed geometry turbo has a bit more lag than the new VVT's but still works well. The LB7's has some of the more advanced and more available things due to the fact that they have been out the longest. Good luck with the buy.The Duramax years to avoid are LB7 from 2001 to 2004, LLY from 2004 to 2006, LBZ from 2005 to 2006, LMM from 2007 to 2010, and the LML from 2011 to 2016. These are the Duramax engine years that have been most troublesome. “Drive Past Myths: Get the Real Deal on Car Buying!”.June 3rd, 2019. 6.6L LB7 Duramax Specifications And Information. 2001 was a huge year for GM lovers across the United States. Not only was 2001 the start of the Duramax engine, but also the famous Allison 1000 Transmission. This first Duramax engine mated with GM trucks was coined the LB7 Duramax.stock 01-04 will be most fuel efficient but with a few mods youll be able to get just about any year to hit the same mileage, ... General Discussions 01-04.5 LB7 Duramax Powertrain New Member Introductions Exterior Build Threads. Top Contributors this Month View All Nate Dmax 251 Replies. rwood64083 241 Replies. R.May 27, 2022 · The first engine was installed in 2001 in Chevrolet and GMC trucks. 23 years after the project was first conceived millions of vehicles now have the engine installed. A Brief History of the DURAMAX Diesel Engine 2001-2003 LB7. The first DURAMAX diesel engine, code LB7 debuted in 2000 For the 2001 model year. Industrial Injection 2001-2004 6.6L LB7 Duramax Premium Stock Plus Long Block Engine The Industrial Injection Premium Stock Plus Duramax Long Block was ...Description. The ultimate LB7 kit includes everything you need for a successful injector installation, cup and sleeve resealing, bolt replacement, fuel line upgrade, and glow plug replacement. It also comes with a super high-efficiency Cat Fuel Filter. This comprehensive kit is backed by a two-year warranty and contains all the necessary ...When it debuted in ’01 model year GM ¾-ton and larger trucks under the RPO code LB7, it introduced the segment to aluminum cylinder heads and high-pressure common-rail injection—two things that make 500rwhp possible with nothing more than a tweaked ECM (think EFI Live). The icing on the cake is that the Duramax remains durable, quiet and ...Apr 28, 2011 · The only ford diesel worth having is a 7.3 and they lack fuel economy and power. The 6.0 ford could be good if you get it dirt cheap and spend about $10000 in parts to bulletproof everything. Just my opinion and experience. 2001 chevy 2500hd 4x4 ext. Cab long bed lb7. 5" turbo back exhaust into 6" tip. 6.6L Duramax Diesel Engine LB7. This original Duramax Diesel 6600 V-8 (LB7) was introduced in 2001 and was used through the mid-2004 model year. It offered a unique 32 overhead valve design coupled with high pressure direct fuel injection. The engine design included an experimental composite aluminum cylinder head. The most frequent …SKU: DURAMAXLB7LB. GM 6.6L Duramax LB7 Remanufacture Long block Engine. Our Price: $5,195.00. We stand behind our unbeatable quality with a One year unlimited mileage warranty! - available on most engines. REMAN LONG BLOCK: Includes Block & Cylinder Heads, Cam/Main/Rod Bearings, Camshaft, Connecting Rods, Gaskets, Lifters, Piston …Good block and rotating assembly. Injectors are the only weak part really. The fixed geometry turbo has a bit more lag than the new VVT's but still works well. The LB7's has some of the more advanced and more available things due to the fact that they have been out the longest. Good luck with the buy.Description. 2001-2010 LB7/LLY/LBZ/LMM Duramax Heavy Duty Engine Mounts developed and tested for use on high horsepower application to reduce engine flex in the chassis and broken OEM engine mounts. These high performance Duramax motor mounts have been designed to maintain the alignment features of OEM mounts while adding significant …You can get amazing deals on Fire tablets, WiFi mesh systems and more during Amazon's New Year Sale. Check out some of the best deals below: If you buy something through our links,...LB7 High Rail Pressure-LOW FPR voltage. So I've been fighting this problem literally for years now, it's time to figure it out! Problem- at idle, rail pressure starts out at commanded pressure (around 6,000 psi), then after 5-6 seconds, starts slowly building pressure, usually leveling off at around 20-22,000 psi.RPO Regular Production Option Codes (Engine Series) There have been seven Duramax turbodiesel engines since their introduction at the turn of the new millennium: LB7 – 2001 to 2004, 300 horsepower, 520 pound-feet. LLY – 2004 to 2005, 310 horsepower, 520 pound-feet. LBZ – 2006 to 2007, 250 to 310 horsepower, 460 to 605 pound-feet.

It’s been 10 years since GM stopped producing the LB7 Duramax, but thanks to their longevity, efficiency and performance potential, the 2001-2004 GM trucks are still some of the most sought after light duty diesels on the road today. It may be getting hard to come across super clean low mileage LB7 trucks, but even at higher mileage …. North port florida weather

This Silverado went through a gradual evolution over the years, from a mild shop truck to a souped-up powerhouse. The earlier build consisted of a stock LB7 bore block with a balanced stock crank, Carrillo connecting rods, MAHLE Motorsports cast de-bowled pistons with valve reliefs and 16.1:1 compression ratio.The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ... While it's history stretches back to 1982, we are going discuss the more modern years. The 6.6L was introduced in 2001 and replaced the 6.5L and the company hasn't looked back since. 2001 - 2004.5 LB7. 2001 was the year the 6.6L would be unleashed upon the diesel world. Let’s take a look at the highlights of other powerplants within the Duramax family that are reliable. LB7 2001-2003. This engine is getting to be pretty old now, but it is still powerful and reliable. So, it’s a good candidate for what are the best years for the Duramax. Because of its age, it’s probably the cheapest Duramax engine around.Nov 27, 2017 ... ... ideas is generated from our listeners. 1,200HP Duramax LB7 - JOY RIDE. 37K views · 6 years ago ...more. Diesel Performance Podcast. 6.94K.Introduced in 2001 as a joint venture between GM and Isuzu, the Duramax V-8 was the General's bid to one-up Ford and Chrysler's newest generation of powerful and efficient diesels....The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ...01-04.5 LB7 Duramax Powertrain LB7 mileage help. Jump to Latest Follow ... But with all the sensors being 19 years old, and plastic getting brittle and not as playable, I was thinking MAF, MAP or something similar. I jump on it from a dead stop and I get a dead spot at redline in 3rd or 4th gear for a moment…my guess is MAF. ...8th digit of the VIN is a "1" for LB7 and a "2" for LLY. All the duramax platforms have their quirks. I personally prefer LLY's, they are most notorious for headgasket issues but after 15+ years I'm fairly confident that if there was an issue with the truck, a previous owner would have fixed it. 6.0L Gas engine would probably be cheaper on …Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain. Follow Forum Create Thread Filters Show: Loading… 1 1 of 469 Go to page. Go. 469. Sticky LB7 Torque Specs. Durallymax; Mar 13, 2010; 2. 26 243K Jan 22, 2023 ...I own a 2002 HD 4x4 Silverado crew cab Duramax. It's now time to do some work to it after 14 yrs. of relatively pain free driving/towing. Bought new in San Diego Nov. 2001. Atm - 119,800 miles. Warranty injector replacement at 35k miles. Symptoms: 1. About a year ago started to set a check engine light (P1093)Low fuel rail pressure) while towing.Found some for a 2003 LB7 to 2004.5-2005 LLY and LB7 to 2006-2007 LBZ. I think the key is that the 2006 LLY was mated to a 6 speed, unlike the 2004.5 and 2005 models. An 06 "LLY" is mechanically an LBZ... so forget the LLY part altogether. You're attempting to swap an LBZ into an LB7 truck.Duramax LB7 and LBZ are both 6.6L diesel engines. The LB7 is a 1st generation engine, while the LBZ is a 3rd generation Duramax engine. Both engines share many of the same engine parts, including crankshafts, camshafts, connecting rods, blocks, fuel tanks, bore x stroke, and so forth. Despite their similarities, the two engines differ slightly..

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