Lb7 duramax years

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.

What Years Were the LB7 Duramax? The LB7 Duramax can be found in the 2001-2004 Chevrolet Silverado HD and GMC Sierra HD. It was also used in the Chevrolet Kodiak and GMC Topkick, which were …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.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 ...Lb7 injector issue. Hey guys, new here to this forum and was looking for a little assistance. I have 2004 lb7 duramax with 269k miles, replaced the factory injectors last week with remanufactured Bosch injectors and truck drove and ran amazing until this morning, pulled into work and truck sounded like it had a fuel knock.Midway through the 2004 model year, GM released the second-generation Duramax, RPO code LLY. Although much of the LLY’s internals match what you’ll find in the LB7, this version of the 6.6L V8 brought an improved injector design, variable geometry turbocharging and cleaner emissions to the table. On early versions of the LLY (’04.5-’05. ...

Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain. Difference in years for lb7 motor. Jump to Latest Follow 3K views ...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 ...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.GM 6.6L LB7 V-8 Duramax Turbo Diesel Engine Vehicle Applications; Year Make Model Transmission Power (hp / kW) @ RPM Torque (lb-ft / Nm) @ RPM; 2001-2003The exact MPG any engine gets depends on the vehicle it’s used in, but the 6.6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driv...Every year, millions of people plunge into a period of feasts and fireworks in celebration of Chinese or Lunar New Year. How did this holiday get its start? Advertisement Every yea...Nov 5, 2020 ... The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. These diesel engines are where the Duramax started, ...

I have injector number 8 that does show a balance rate of -3 to -3.5 yet in drive it goes down to -2 so I think so far I am in good shape. Chevrolet '16 2500HD 4WD LTZ CC D/A LML Deep Ocean Blue, HID lighting, otherwise stock. GMC '04 2500HD SLE CC D/A LB7 SB Summit White, LineX, Nicktane, JK headlight harness, JK fuel pump …Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain 01-04 lb7 difference. Jump ... GM issued a warranty for this after the fact for injectors, which now have 7 year/200,000 mile coverage. The Duramax was on the Ward's 10 Best Engines list in 2001 and 2002. Specifications. Engine type: 6,599 cc (402.7 cu in) …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.The LB7 was the first generation Duramax and a great engine that is popular with the hot rod community because it can be tuned to produce as much as 1000HP. In short, the core difference between Duramax LB7 and LBZ is the fact that LB7 has 300 hp and 560 lb-ft of torque with a fuel tank size of 26 Gallons whereas the LBZ …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 …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 ...

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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 ...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 ...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.Duramax LB7 Cold Air Intake Benefits +5–15 horsepower +10–20 lb-ft of torque; Increased fuel economy; ... Banks Power have produced some very popular and powerful Duramax parts over the years, including for the LB7, and they are very respected within the community. It might sound a little surprising to be picking a ram air instead of …The 2007 LBZ also has the same issues as the 2006 LBZ. In my opinion, and yes I know, opinions are like assholes. Everyone has one and they all stink. If you want a Duramax the 2006-2007 classic is the time that you want to be looking. There is no injector or very little injector harness problem unlike the older LLY.

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.These stainless DHD retainers are direct OE Replacements for LB7 Trucks 2001-2004. This is the perfect alternative to outrageous OE replacement prices. DHD's exclusive kit includes 8 304SS line retainers and 8 stainless M5 bolts. Replaces GM #'s 97250489 & 97237113.83 posts · Joined 2013. #15 · Jan 31, 2013. Yeah my 6.0 had custom tuning. But it looks like merchant automotive has some good stuff for my truck including a pump upgrade kit for the t-case. 2003 Chevy 2500HD Regular cab, 4x4, LB7, Allison, 5in Straight pipe DP back, 6in Black Chrome tip, PPE Boost valve, 6k HID lows 159k Miles SOLD. …LB7: 2001 – 2004. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. In general, it’s a …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.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 ...What Years Were the LB7 Duramax? The LB7 Duramax can be found in the 2001-2004 Chevrolet Silverado HD and GMC Sierra HD. It was also used in the Chevrolet Kodiak and GMC Topkick, which were …Feb 1, 2023 · 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. The exact MPG any engine gets depends on the vehicle it’s used in, but the 6.6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driv...Year Make Model: 2003 Chevrolet / GMC 6.6L Duramax Year Make Model: 2002 Chevrolet / GMC 6.6L Duramax Year Make Model: 2001 Chevrolet / GMC 6.6L Duramax Part Type: High Flow Intake Bundle Kits Availability Remarks: Ships …

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.

The LB7 Duramax diesel is a direct-injected, turbocharged, intercooled, four-valve-per-cylinder V-8 that produces 300 hp and 560 lb-ft of torque. Starting from a blank sheet of paper, the 6.6L...Remanufactured 6.6-Liter LB7 Duramax Engine - Complete Long Block - Built to Factory New Specifications with Updates - Diesel Experts ... Peak Torque:• 500 lb-ft @ 1,600 rpm (2001 model year)• 520 lb-ft @ 1,800 rpm (2004 model year) Related. Warranty. The 6.6-L Duramax Bare Long Block Engines come with a 1 Year Unlimited Mileage Parts ...Even in the era of the virtual event, it tends to take me a few days to recover from the whirlwind of CES. Frontloading the year’s big hardware news is a bit less than ideal, but p...2001-2004 LB7 Duramax Exergy 12mm Stroker CP3 Pump (LBZ Based) - E04 10107 (0) Reviews: Write first review. SKU: E04 10107. Exergy 12mm Stroker LB7 CP3 Pump Pricing: $2,650.00. Qty: Add to Cart. Item Inquiry ... Year Make Model Engine Liters: ...Years later, he has a 1,000-horsepower LB7 Duramax to show off! By Evan Laux. Published: Feb 1, 2023. One of the biggest milestones for someone with a performance diesel truck is hitting the 1,000-horsepower mark for the first time. Four digits is a huge milestone, and one that many builders are inclined to rush to straight out of the gate.Every year, millions of people plunge into a period of feasts and fireworks in celebration of Chinese or Lunar New Year. How did this holiday get its start? Advertisement Every yea...The LB7 Duramax was first introduced for the 2001 model year in the Chevrolet Silverado HD, GMC Sierra HD, GMC TopKick (medium duty) and Chevrolet Kodiak (medium duty) trucks. That year also brought the Allison 1000, arguably the first automatic transmission in its class worthy of being mated to a powerful diesel.

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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 ...Duramax Lb7 Weird valve lash. So i recently pulled my engine apart to change injectors, and now im adjusting my valves, because might aswell. I adjusted the valves to 0.12 as recommended, then spun the engine around a couple of times and rechecking all my adjustments. I noticed alot of the valves were now 0.16 or more, some …The second Duramax engine, the LLY, first arrived on the market in mid-2004, with an increase in both power output (310 hp against the LB7’s 300) and torque (590 lb-ft against the LB7’s 520).I saw a new dodge in person recently and it looked like a pretty decent truck, however, there is a good bit of emissions crap on the newer cummins. TEXAS A&M ENGINEERING. SOLD: 2001 2500HD LT CCSB 4X4 LB7. AKA: "******". Tuned by SCRTuning: 431 HP 823 TQ. New Truck: 05' CCSB 2500HD 4X4 LLY Code Name:Lilly.2001 Duramax. The RPO LB7 (engine code “1”) was first introduced in 2001 and continued until 2004. This is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads. …The LB7 Duramax diesel is a direct-injected, turbocharged, intercooled, four-valve-per-cylinder V-8 that produces 300 hp and 560 lb-ft of torque. Starting from a blank sheet of paper, the 6.6L Duramax is recognized to date as the fastest diesel development program in the world. It went from concept to initial production in only 37 months.Jan 3, 2021 ... 16K views · 3 years ago ...more ... LB7 Injector Diagnostic & Installation - 2001-2004 LB7 Duramax ... Compression Testing an LBZ Duramax by ...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 ...We’re going to cover everything you need to know about the Duramax LB7: Origin Story; Engine Specifications & Tech Dive; LB7 Reliability; Performance Upgrades; Origin Story. …The exhaust system on the Duramax LB7 is one of the most restrictive parts with respect to performance. If you are looking to increase power, especially if you are tuned, an exhaust is one of the best LB7 upgrades.. With power gains ranging from 20-30+whp and 40-60+wtq an upgraded exhaust will provide big power gains, but there are …Duramax Horsepower & Torque Figures by Model Year. Model Year (s) Horsepower. Torque. RPO Code. 2001 - 2002. 300 hp @ 3,100 rpm. 520 lb-ft @ 1,800 rpm. LB7.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. ….

Can someone please tell me what years the LB7, LBy, LBz, and LMM where in production. I am about to buy a new truck, and wondering what years models have certain motors in them. I use to own a 2004 LB7, which was an awesome truck, until a cheap air compressor plugged into the cigarette lighter caught the truck on fire. :boobooThe L5P Duramax is the latest version of the Duramax V8 diesel engine. (engine code Y). Introduced in the 2017 model year, it was the most powerful diesel engine GM had produced, with 445 hp (332 kW) at 2,800 rpm and 910 lb⋅ft (1,234 N⋅m) at 1,600 rpm. Design specification performance can exceed 550 bhp (410 kW) at 3,050 rpm and 1,050 lb⋅ ... VIN Code 8 - LML (2011-2016) In 2001 GM replaced the outdated Detroit Diesel 6.5L when they debuted the Duramax LB7. Development of the LB7 began in 1997 when General Motors and Isuzu Motors paired up to create DMAX Ltd and after just over three years, the state-of-the-art 6.6L V8 with four valves per cylinder was ready to be unveiled. At the ... Diesel of the Week. 1,400-Horsepower Turbocharged LB7 Duramax. Since 2019, Daman Perry has been building up his diesel performance shop DP Customs. To …Yahoo Small Business just came out with an offer to give every small business in pandemic recovery a free website for a year. Small businesses looking to connect with customers can...8 LB7 Reman Bosch Injectors 45% Over Copper Washers O-rings ... 2001-2004 LB7 Duramax Reman Exergy SAC Fuel Injectors 45% Over (Set of 8) - E01 10116 Fuel Injector Set (0) Reviews: Write first review ... Very few parts are reused. In our years of experience these reman injectors have not exhibited an increased reliability risk.Out of the stream of unceasing culture and news, a list encapsulates, it closes a loop. “We were here,” a list says, in its own small way, “at least for one more year.” Want to esc...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. ... Lb7 duramax years, , LB7: The First Generation. The LB7, introduced in 2001, marked the dawn of Duramax engines. With its impressive power output and solid construction, it quickly became a favorite among truck enthusiasts. The LB7 was powered by a 6.6-liter V8 engine, capable of producing 300 horsepower and 520 lb-ft of torque., VIN Code 8 - LML (2011-2016) In 2001 GM replaced the outdated Detroit Diesel 6.5L when they debuted the Duramax LB7. Development of the LB7 began in 1997 when General Motors and Isuzu Motors paired up to create DMAX Ltd and after just over three years, the state-of-the-art 6.6L V8 with four valves per cylinder was ready to be unveiled. At the ... , 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 acknowledged their problems when they corrected the original injector design and issued a 200,000 or 7-year warranty on the updated model., They are light years ahead in the tech and comfort department compared to the 01. Having said that, that is a pretty big jump in miles too. With the LML there is the CP4 and TCM issues but the injectors on the LB7 will need attention at some point too. At 13K that’s doable with the LB7, the LML will just tow it much easier., The 2001 – 2004 Duramax LB7 and 2004.5 – 2005 Duramax LLY are the years with the most problems. So, the years that are affected by these problems should be avoided. Today, I’m going to inform you about the Duramax engine years to avoid. If you’re wanting to purchase the best ones, there’s a list to assist you. , Dec 12, 2023 · 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. , LB7 Duramax 2001-2004. In 2001, GM teamed up with Isuzu and brought another innovation to the diesel crowd and was first to market with a common-rail direct-injected diesel engine, the LB7. Like every Duramax that followed, it featured 6.6 liters (or 402 cubic inches) of displacement, a cast-iron block with aluminum heads, four valves per ..., 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..., 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., 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), Year Make Model Trim Engine Notes ; 2004: Chevrolet: C4500 Kodiak: C4C042 Cab & Chassis - Crew Cab: 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged ... Duramax;With LB7 Engine;without California Emissions: Large Variety Of Trusted Brand Partners. We provide top quality parts for the specific make of your diesel truck., The LB7 Duramax Engines is a General Motors diesel engine family for light to medium duty trucks. The 6.6-liter LB7 Duramax Engine is produced by DMAX, a joint venture between GM and Isuzu in Moraine, Ohio. The Duramax Engine was released in late 2001 into the Chevrolet and GMC chassis vehicles. The LB7 Duramax Engines were …, 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..., Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain 01-04 lb7 difference. Jump ... GM issued a warranty for this after the fact for injectors, which now have 7 year/200,000 mile coverage. The Duramax was on the Ward's 10 Best Engines list in 2001 and 2002. Specifications. Engine type: 6,599 cc (402.7 cu in) …, 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 ..., 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., 2001 Duramax. The RPO LB7 (engine code “1”) was first introduced in 2001 and continued until 2004. This is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads. …, As the year wraps up, it's time to start thinking about deadlines—and there are a handful of financial deadlines to meet by the end of the year. Here are a few money moves you shou..., 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., 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., 8 LB7 Reman Bosch Injectors 45% Over Copper Washers O-rings ... 2001-2004 LB7 Duramax Reman Exergy SAC Fuel Injectors 45% Over (Set of 8) - E01 10116 Fuel Injector Set (0) Reviews: Write first review ... Very few parts are reused. In our years of experience these reman injectors have not exhibited an increased reliability risk., 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., LB7 Duramax 2001-2004. In 2001, GM teamed up with Isuzu and brought another innovation to the diesel crowd and was first to market with a common-rail direct-injected diesel engine, the LB7. Like every Duramax that followed, it featured 6.6 liters (or 402 cubic inches) of displacement, a cast-iron block with aluminum heads, four valves per ..., 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 more, 2006 to 2007 Duramax LBZ. 2006-2007 Duramax LBZ is among the best year generations certified by many owners. First of all, let’s say that all the generations are good, but for some features, 2006-2007 stands out among the competition. The 2006 to 2007 Duramax was a 6.6L turbo-diesel engine produced by General Motors., 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 ..., 12 Days of Christmas! - https://bit.ly/3oGRWptIn today's video Dustin sits down to talk about the ever-popular (but injector issue having) LB7 Duramax. This ..., 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., Jan 18, 2024 · 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. , 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. ..., 2017 GMC Denali: 5% tint all around, 55% windshield, RC traction bars, 6" Fabtech, 20x12 Hostile Stykers, 35x13.5 Toyo A/T. 2003 LB7 ECSB Too much air, too much fuel (Died 26May2017) . Daily Driver: 2014 Cruze TDI, cold air intake (best mod ever), 5% all the way around., Apr 3, 2024 · The LBZ is great in stock form, but get horsepower numbers above 600, and it needs some upgrades to survive. LMM: 2007.5 Through 2010. The LMM engine ushered in the emissions era of Duramax. Although the LMM is almost the same as the LBZ, which makes it a very good engine, it features several new emissions control devices.