How to make a lb7 reliable

How to make a lb7 reliable. *driving light-footed. Since this is an LBZ thread, to make the whistle "louder" : Plug resonator. Jun 13, 2013 · 2004 2500 4x4 LB7 Black charcoal. #9. 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 has 360 horsepower and Oct 16, 2009 · These engines are VERY complex machines at the expense of putting out incredible amouts of power in a personal vehicle. 5 17 stts. Get a set of sacs from lincoln diesel and a lift pump. Comparison of the Best Injectors For LB7 Duramax. Jul 29, 2008 · 233 posts · Joined 2008. A cracked injector body. No muffler/ cat. Mar 22, 2023 · Discover the ultimate solution for your LB7 Duramax engine's injector issues with Dieselogic's reliable and high-quality remanufactured injectors. 6L engine, which included a keyed crank, and cut and coated pistons. Sep 7, 2015 · The biggest issue with '01-to-'04 and 1/2 LB7 engines is their fuel injectors' propensity to fail, typically before an engine reaches 100,000 miles. This is because the fuel injector on its own is very prone to cracking and the internal ball seat within the Injector causes wear and tear which would then make the Injector leak. With any performance Allison build, expect a triple disc torque converter, upgraded clutches, frictions, steels, a recalibrated valve body, modified pump and all new bearings and seals. I am very new to engines. What most people don't realize is that your trans (even built) will need to be "refreshed" after a few good years running 500hp. EFI Live V2 w/dsp5 MAX EFFORT by Idaho Rob, EGT's Never higher than 1150* :thumb. If you plan on daily driving it at 800whp then it's gonna take $35-40k to do it right and make everything hold. Whether you’re in search of new OEM injectors, remanufactured options, or refurbished injectors, we have something for any budget. #10. One really positive thing is that the Bosch injection system is gone for 17 and the Denso system is in. Dec 23, 2007 · 2004 D/A LB7 4x4 CCLB LS2500 Cognito leveling kit & P+I braces, Firestone airbags, Towbeast, 255/85/R16 M55s, 235/85 Studded Trailcutters, Autometer Pyro&Boost,SS running boards and mudflaps, All on lights, High Idle, Espar coolant heater, strait pipe, other stuff Mar 13, 2018 · Cracking the five-speed Allison 1000 open is a necessity if you need your LB7 to be reliable with added horsepower in the mix. Let’s take a look at the D-Max over the years: 6. 03 Lb7, 4 inch straight piped mbrp exhaust, s&b intake, ppe boost valve, EFI by Kory, 20x10 rockstars, billet grille, line x, air ride, train horns, auto meter factory match gauges,kicker 10s. People have ran 800+ on stock lb7/lly pistons and held up to the abuse. Chevrolet Silverado, which has Aug 25, 2015 · Rebuilding a Dmax is basically the same as any other engine, just a lot bigger parts and quite a bit more things to remove to actually get to the engine itself. Merchant sells a kit with everything you need including new fluid for around 120$. Product Offerings: Injector Replacement Kits: Our comprehensive injector Aug 6, 2013 · 2001 chevy LB7, 6inch RCD lift, AFE intake, mike L stage 4 tranny, airdog 150, 5" MBRP turbo back with diamond eye down pipe, banks waste gate, turbo intake horn, tuned by Tony @ ridgerunner Feb 8, 2018 · 6 Speed Conversion Kit for the LB7 & LLY 5 Speed Allison: Your 2001-2005 Silverado/Sierra HD diesel is powered by either the LB7 (2001-2004) or LLY (2004. OUR TOP PICK: Bostech DE651 Silver Series Remanufactured Fuel Injector. Install the injector harness and tighten the bracket bolts to 9 Nm or 80 lbin. 6L LB7 Duramax Maintenance. Drove it to 170k no problems. SOLD. Nov 24, 2007 · To make my bench harness I started with a 99-05 LS1 / Truck harness from Speartech which works on the LB7. Dec 21, 2009 · Running a tune where your maxing out the iinjectors is not good. Dec 30, 2008 · Building a Reliable 350. You’ll have total peace of mind running the most reliable injectors ever offered for your LB7. #11. Secondly, it helps your engine run better and more efficient overall. Nov 27, 2019 · This is going to be the first part in a series that I will be doing to show you how to change the injectors in an LB7 Duramax. For starters, I don't know if anyone has any data showing the HP4 system is any better. To help those of you who currently own an LB7, or those who want to purchase one, we’ve compiled a pretty massive list of LB7 Duramax specs. 629 posts · Joined 2009. Just an FYI, LB7's don't really get a loud whistle or whine with a stock turbo. Dec 22, 2021 · 12 Days of Christmas! - https://bit. I just purchased a 2003 Lb7 crew cab Duramax from my father. #5 · Feb 7, 2013. Feb 7, 2013 · JoshG. I'm looking for proven paths to 600+ HP or whatever the bottom end will stay safe with. 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. May 24, 2021 · Refuel only from a reliable source Refuel from a good, quality fuel station. Aug 5, 2020 · Water Pump Failure. Aug 24, 2021 · 6 speed Allison mated to a lb7. Dec 25, 2021 · At a Glance: Our Top Picks for Injectors For LB7 Duramax. First, you get tunes that can help with towing and fuel economy, which helps the device pay for itself over time. 50 Toyo MTs. Jan 4, 2010 · I have assembled different write ups and DIY articles to come up with the most complete LB7 injector replacement write up I know of. I tow light to heavy, gets groceries across town and everything in between. A primary choke point on the intake side of the LB7 (other than the factory turbo, which we’ll delve into below) is the stock Y-bridge. Lightweight cast - aluminum pistons (among the lightest ever put into a Duramax engine). Injectors are cheaper for lb7. When Dec 31, 2013 · 8350 posts · Joined 2010. Sep 24, 2013 · Lb7 lift pump opinions. Billet HTT S366, 45% Injectors, 85% Cp3, Hamilton Valve Springs. I added to it for the LLY and LBZ. This made them capable of handling roughly 100 more horsepower Mar 17, 2019 · Ohio. #3. Van Alstine of Sandusky, Michigan, did the machine work on the 6. Missed that warranty by a month or so. 6L LB7 Duramax Maintenance guide goes over everything you need to know to properly maintain these trucks. 4. I would like to be around the 400rwhp so that them hemi boys can cry a lil. 5 Chevy/GMC Duramax LB7 Diesel trucks. So I’m looking to find out if any users have tried to install a lml Allison lct 1000 4x4 transmission in a 01-05 body truck I understand there are a lot of differences as far as internals, bellhousing, valve body, and control. 5150ram said: I used a 04 lly engine harness and ECM. If you are only going to make one LB7 performance upgrade, a tuner is the way to go. You can request the VIN and build sheet to see if they have ever been done before, it's quite expensive if you have to do it out of pocket. Fprv = fuel pressure regulator valve. When I first put the intake system on, I needed to post here and ask if the high pitch turbo whistle was a problem. Got an '04 LB7, its my daily driver and family Wagon on weekends. 0 gasser. To do it RIGHT you’ll be looking at a major undertaking, not worth it in the slightest amount. Our 6. Just like the small-block world, ARP is the go-to fastener in any Duramax build. 2004 LB7 ECLB. Bosch 0986435502 Stock Replacement Injector 01-04 6. 6L LB7 Duramax problems and how to fix them. #10 · Dec 31, 2013. 2009 5500 Graystone metallic Crew Cab 4x4. Apr 3, 2019 · 2004duramaxLB7. After that a downpipe will help some as well as a drivers side boost tube. This affects fuel delivery. The LP5 is the 1st year that GM is making the motor totally in house vs the previous Izuzu diesel influence. IMAGE. Most leaks are significant and show themselves within 50 miles, by thinning the oil enough to drop oil pressure (5-7 gallons of fuel and oil mixed in the crankcase). run additive, and lift pumps are supposed to make the injectors last longer, but i have no experience there, so i couldn't tell you. Okay i'm new to LB7 trucks but not to duramax. LB7 Hard Mar 21, 2024 · While the Duramax engines seem to be mostly reliable these days, the earlier years exhibited a lot of problems. Dec 1, 2010 · The single best mod to lower EGT's would be twin turbos. This engine was designed to deliver exceptional towing and hauling capabilities, making it ideal for heavy-duty applications. From the factory, the LB7 Y-bridge routes air through 2-3/8-inch diameter openings. #23 · Aug 15, 2008. The first one is what this thread is about. That sent the driveshaft flying around and it smashed the trans at 120 kph breaking the shift linkage off and Feb 17, 2015 · lol yes, you should just post that picture every time someone asks "how can i make my truck roll coal". The pump rub can be fixed in 2 hours of your time. It actually runs like a diesel should! Can't wait to start engineering the additions for the truck! Share. 2) Yes it is possible to reach your goal on a 484/68 vgt configuration with good tuning and proper parts. The LB7 featured a 32-valve design with high-pressure common-rail direct injection. Sep 26, 2023 · Duramax LB7 Tuning Benefits. Then the 4" exhaust helped make it louder. 5-2005) Duramax. Both engines in the cat eye generation. 4in straight pipe More to come im sure Apr 4, 2012 · CarolinaHD. Feb 5, 2020 · That’s easy, just follow our comprehensive guide to 6. I wouldnt be scared to buy one however. We give you service schedules for normal and severe use, fluid capacities, and a complete list of recommended filters, engine oils, and fluids to use. Mar 30, 2008 · 03 LB7 DIRTYMAX WITH A STAGE 2 CAI AIRDOG 100 BOOST & PYRO HP TUNERS :rocking: J&J AUTOMOTIVE&DIESELPERFORMANCE TUNED 5IN STRAIGHT EXHAUST 4IN DOWN PIPE BD SUPERMAX TURBO KIT BD FLEXPLATE J&J AUTOMOTIVE&DIESEL PERFORMANCE STAGE 6 TRANS PERCISION CONVERTER CRANKED UP TORTION BARS W/ 20"BMF NOVACAINS POWERSTOP DRILLED AND SLOTTED ROTORS 470rwhp Oct 12, 2018 · An 02 lb7 swap to an lbz a much more difficult task than an 03-05 truck. Oct 5, 2007 · Kawtipping. id say itll hold a little more pretty easy, but 500 is a garentee from the company. Lbz engines are prone for broken cranks even at stock power. 9s. It’s a 6. DO NOT ADD THREAD LOCKER TO THE TURBO MAIN NUT. 50 and 100 tune by Kennedy Diesel, suncoast triple disk torque converter and a shift kit, ppe boost valve, billet tie rods, 6in lift, xd mosters with 35x12. LLY has two variants; one with a power output of 310 bhp at 3000 rpm and another 250 bhp at 3200 rpm. With a leak that bad you should be able to see it using some "fuel dye" and a blacklight. 3) Compound turbos are definitely harder on bottom ends than singles. May 25, 2017 · To build a truck that will excel in both sled pulling and drag racing, a potent powerplant is a must. Dec 16, 2016 · SuperBlackTruck. Edge Insight, Autometer gauges, 3inch Drop Shackles. This GM 6. You should then be able to turn the vanes all the way down and get the deep sound you're wanting, or turn them all the way up and make your truck sound like it has a turbine engine under the hood. The injectors and parts that I Jun 11, 2019 · The joint venture (and resulting engine) was known as Duramax, and the LB7 was the first of many models to come. he pretty much summed it up. But on a more realistic budget, exhaust will help quite a bit if yours is still stock. 2001 GMC Sierra 2500HD, CC,SB. May 29, 2017 · Trans Mods To Handle Different Power Levels. Nov 20, 2016 · Nov 20, 2016. 1. 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. In those years, they were paired with a 5 speeds Allison automatic transmission. A 2004 lb7 GMC 2500 crew cab short box has just come into my possession, before I got it the front differential didn't disengage and blew the u-joint in between the front driveshaft and the t-case. 03 LB7 CC/SB 185k 6in fab tech 35. Sep 12, 2017 · We fall into both camps. The most notable benefits are the huge horsepower and torque gains you get from tuning. add me to the list. A small leak from not tightening enough will show in the sample, You Reliable and safe outdoor instrument transformer. 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. The electrical plugs at the fuse box look the same but the wires are in all different spots. By Randy Worner. Now that you know how to rebuild LB7 injector s, you'll be saving money on professional mechanic fees and parts. even the most powerful powerstrokes (6. Product Offerings: Injector Replacement Kits: Our comprehensive injector May 14, 2010 · Same here with the S&B. 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. I have been doing as much reading as possible over the last week, but was wanting some advise. So I have been in the automotive world for a while, but never really paid much attention to diesel trucks or motors until now. Our ’02 LB7 Duramax succumbed to a blown head gasket, burned piston, and munched head by way of poor tuning and a throttle-happy previous owner. From rod bolts to main studs to the Custom Age 625+ head studs pictured, ARP is deeply involved in the Duramax and the diesel engine industry as a whole. Return lines and seals (You already checked and ruled out with a vacuum test) 2. The LBZ also employed stronger rods. 142 posts · Joined 2006. I am still running the stock intake, but have a 5" exhaust. ft torque at 1600 rpm and 310 bhp at 3000 rpm. NC-smokinlmm said: Just swap over to lly top end and be done with it, lb7 injectors dont just have 1 single common failure. The injectors are an issue for many LB7's, and perhaps all at some point. A botched rebuild landed Feb 1, 2024 · What are the best Duramax LML performance mods? Check out the 5 best mods for 500whp-700whp+ including a tuner, intake, and more. If the remote start has a trunk release and you prefer to bump it up separately from the remote start. Mar 29, 2011 · The LB7's are notorious for having injector issues. However, the LB7 did have some issues with fuel injectors, which were addressed in later models. Tighten the 12mm banjo bolt that goes into the head to 11 lb ft. You can add the two relays and push button high idle switch, then connect the trunk release output from the remote start unit to the output of the momentary switch. Oct 31, 2013 · #1 · Oct 31, 2013. But even after that your drivetrain parts are going to wear a lot Apr 3, 2024 · LB7: 2001 Through 2004. Mar 28, 2014 · 1. High pressure lines under the cover (Cracked or pitted enough to leak, or just not tight enough) 3. For starters, the most persistent and notorious problem the LB7 Duramax has is faulty fuel injectors. The most notorious LB7 Duramax problem is their original injectors. Say Feb 15, 2020 · Personally if you’re going to spend the money on an engine build a compstar isn’t a bad investment as they are stronger than stock. The Y-bridge sits in the valley and feeds boosted air into the Duramax’s cylinder heads. Getting rid of the cat and stock muffler will help a decent amount. 6 Duramax over the years. 01 LB7 ext. As an LB7 Duramax owner, you understand the significance of reliable components. And front end upgrades so my tires don't point at each other. cab long bed. Aug 11, 2021 · Even the LB7 can be made to be pretty reliable with the right parts. Aug 27, 2014 · On my second lb7 first one didn't do research bought it with 132k in the shop 2 weeks later for 8 injectors and three fuel lines. The block of the LB7 is rock-solid and so are most of the internals. Built using OEM Bosch cores, these injectors are rigorously tested for performance, ensuring durability and fuel efficiency. Or call us 920-361-7700 . Lawrenceburg, KY. Since its debut in 2001, this 6. The fuel sender, the ac, and oil pressure won't work without adding some wiring. Just as they are in the Dodge common rail 5. 5in custom build exhaust into 6in stack axle dump. Mar 17, 2019. if you plan on adding more power int the future, id jus prepare for it and deal with the tranny once. The second one is the one on the cp3 and is what lb7kid is asking about. ported intake horn and metal intake will get you the turbo sound. Jul 3, 2022 · faulty fuel injectors. And just as a FYI don’t shy away from a 2006 listed as LLY because its the same as the LBZ just tuned slightly different. Sep 8, 2012 · Lincoln Diesel Specialties. Apr 10, 2010. Tuner / Custom Tune; Cold air intake; Exhaust System; Intercooler; Downpipe; 1) ECM and TCM Tuning. And they worked great! Nov 5, 2020 · Here is our guide to the 7 most common 6. My goal is to build a reliable small block, with at least 350-375hp. Duramax internals is good till about 700HP which where most kit mini twins will put you. When an LB7 injector fails, it can dump an LB7 +60% Exergy Reman Injectors (set of 8) This the perfect injector upgrade if you are looking to make 750hp (more than we suggest for your stock bottom end). 285/50/20 Nitto 420s, 20x10 Gear Alloy 726MB. Trust Dieselogic's 55 years of experience and top-notch customer service to get the best value for your investment. The LB7 arrived in 2001 and is still popular in the used engine market. Oct 25, 2013 · Usually if the return lines are leaking you would notice the fuel in the oil before the tank of fuel is burnt. The only thing with LB7s are injectors, they can go out at any time, any mileage, 1 at a time or all 8. It is a nice harness with clips for a power source and an on / off toggle switch with a light for the ignition on signal. The LB7 introduced in 2001 and continued until mid-2004. I second what nc said. Make sure CORRECTION. Apr 20, 2011 · so you want smoke, heres how ya get smoke, make sure your fuel tank is full, run a soft rope about 4-5 ft long into the fill spout for your fuel tank let it soak up fuel, matter of fact just completely soak it before hand, then lite the end up and step back and watch. Tuners offer the best bang for the buck and can easily add over 100whp. LB7 model years range from 2001 to 2004 and Nov 29, 2018 · Over time, and aside from the infamous fuel injector issues, the LB7 proved to be one of the most reliable diesel engines ever produced. Feb 1, 2023 · Duramax LB7: 2001-2004 model years. 6 Duramax: LB7. it hold up to 750 stage 3 hold up to 500. 6-liter LBZ Duramax, including the Chevrolet Kodiak, GMC TopKick, GMC Sierra, and the. #3 · Oct 30, 2011. It is a reliable product for metering and protection in high-voltage networks. The LBZ Duramax V-8 engine is more powerful than the LB7 and LLY with its 605 lb. It was a huge success that ultimately led to the creation of other Duramax engines including the LBZ, LMM, LML, and L5P. Unless originally sold in California, LB7 engines didn’t include any emission control devices. *Cold air intake (such as a Volant) *a tuner. A set of Custom Age studs are always on order when 100 psi (or more) of boost will be sent through a Jul 3, 2022 · faulty fuel injectors. You will need 500HP to pull low 14's if your lifted and running the tires to rock crawl. While the Allison 1000 was a big step forward, it still needed improvement. I have an airboat (my hotrod) with a 350 on it, right now i am running a stock rebuilt engine. Stay tuned for Part 2, where we’ll explore the second-generation Duramax, the LLY version, from top to bottom. Oct 13, 2010 · There are two ways to do it. Click Here: Lincoln Diesel Specialties . Jun 3, 2019 · Producing 235-300 horsepower and 500-520 lb/ft of torque, the LB7 Duramax was a beast. Fuel Filter Housing O-ring Leaks. Jun 6, 2013 · #1 · Jun 6, 2013. In storeage, passing the time while I getting the money ready for changing it to a daily driver. The original LB7 Duramax was pulled and given a thorough rebuild using top-quality hard parts. Cast in 4340, the crankshaft was treated with a process to increase durability under extreme heat. *some sort of free flowing exhaust. I know the pistons are better on LB7s and rods are the weak area. Good morning this is my first post on the forum and happy to be here. They have several, that's the problem, lly injectors last much longer and are very easy to swap out Have seriously considered this but very expensive to do. 2001-2004 Duramax LB7 Oct 9, 2023 · The LB7 was powered by a 6. 3inch boost tubes, Raptor Liftpump, 3inch Profab Ybridge, Arp Headstuds. THAT IS FOR TORQUE TO YIELD TURBOS ONLY. GM’s first Duramax also provided a sound platform from which the General could build. They are not old school nozzles and they fire mutiple times per power stroke. HONORABLE MENTION: Duramax LB7 Diesel Injector Super Set Plus. Well no problem with twins on a stock Duramax. then the turbo upgrade if you want to spend big money. You can find good, used trucks for a decent price these days, and with minimal modifications to an LBZ, you can make an easy 400-500 horsepower. Feb 5, 2015 · They're a much better performance crowd and if you search around you'll find the info you need. The steel-forged and cracked-cap design was the same as the LLY and LB7 rods, but they were meatier on the big end versus the other two engines. I want to make an ultra reliable do all weekend warrior. If you need to travel remotely, go on a full tank, or have a fuel container filled with your preferred quality fuel. In the diesel engine realm, the LB7 Duramax stands tall as a symbol of power and innovation, earning the admiration of truck enthusiasts and connoisseurs. Oct 28, 2011 · 1439 posts · Joined 2010. However, there are also a lot of other benefits. Other than getting a louder "growl", there wasn't much difference. I repinned all the plugs so it would plug in and work. 2862 posts · Joined 2010. 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. The CP3 seal. The later engines with the variable vane turbos will give a completely different Apr 4, 2012 · CarolinaHD. They worked well, but when the old transmissions were ready for replacement, people started using 6-speed transmissions. Jan 23, 2022 · 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. The LB7 main nut tightens as the turbo spools. 3" intake horn. Sep 20, 2014 · 600+ HP in LB7. *propane injection. 3" downpipe- i installed one and made a HUGE difference in overall exhaust tone and it doesn't so und like screeching owls having sex anymore. You're looking at ~$3000+ to rebuild one if you do it yourself depending on how far you decide to go and what machine work you'll need. The internal components on the LB7 were designed to be lightweight, yet extremely durable. Dec 4, 2023 · LML Allison 1000 swap in LB7. They have similar injector issues to the lb7, they just cost twice as much. Apr 29, 2011 · Sold: 01 lb7 6 inch fabtech lift, 35x12. In this article, we’ll delve into the remarkable qualities that define Jan 1, 2007 · Glasseater;1500536; said: LB7's only have something like 450 TQ at the rear wheels, and like 280 rwhp and that the powerstrokes were actually the most powerful of the "big three" with somewhere around 475 TQ at the rear wheeld and 340 rwhp. LB7 comes with a power output of 300 bhp at 3200 rpm. 50r17 homemade exhaust, s&b intake, efi live tunes. #6 · Oct 6, 2007. Blown Head Gasket. id spend the extra 300 or 400 for the stage 4 suncoast. Paint matched bumpers. There are two different parts with same acronymn. ly/3oGRWptIn today's video Dustin sits down to talk about the ever-popular (but injector issue having) LB7 Duramax. LB7 Duramax Injectors. The two trucks are just too different. . From the top competitors in the industry to over-the-road hot shot drivers, diesel truck Explore our lineup of fuel injectors designed for the 2001-2004. 6-liter V8 engine, capable of producing 300 horsepower and 520 lb-ft of torque. Fprv = fuel pressure relief valve. GM's Turbomax line of engines are some of the May 27, 2008 · 2005 Silverado 2500HD 4x4, Reg Cab LB, LLY, RED. My previous engine was sold to me with a crack (not sure where yet) but the #6 cylinder was filling with coolant. The LB7 main nut tightens as the . Exhaust 4 or 5 is good for that side. Mar 21, 2023 · In order to make room for the deeper bolt holes, the oil feed holes were constructed 2mm smaller. 6l Gm Duramax LB7. PPE makes a boost controler for the LBZ that lets you control the vane position with a knob in the cab. The increasing popularity of GM’s Duramax powerplant backed by an Allison automatic has prompted a diesel subculture of D-Max enthusiasts. Haven't checked balance rates but no smoke no smell no issues Aug 5, 2020 · Water Pump Failure. #12 · Apr 15, 2012. Also which engine is cheaper to drive and for maintenance and insurance, a duramax or a 6. Truck I'm looking at is an 02 Crew cab 4wd. They say going over the 750HP to 800HP is where major internals of the engine need to be added. The lack of emissions parts makes the engines very reliable. That will cover your injector worrys. May 18, 2024 · The 6-speed automatic provided a much better overall driving experience than the outgoing 5-speed Allison transmission that preceded it in the LLY. 0), they only had 325hp at the crank. Jun 22, 2016 · Fasteners. Apr 10, 2010 · 42. Just bought another 04 lb7 185k and it runs strong. Sep 14, 2023 · Sep 14, 2023. Install the lower valve cover and tighen bolts in sequence to 10Nm 89 lbin twice. Click here: LB7 Injector replacement instructions . 7mm connectors to 2Nm or 18 lbin. Like. "Quality Parts and Service at an Unbeatable Price" . They are very reliable trucks, and the Ally can go miles and miles if taken care of on a safe tune. Jan 22, 2021 · How do you tell if an 04 is a LB7 or a LLY? Also which is a better engine a 04 LB7 or a 04 LLY, more reliable, fuel efficient and more powerful. Take a look at the most common complaints about these Duramax engines. Aug 26, 2005 · I've read about quite a few mods that can be done that would improve the fuel efficiency by 1-2 mpg apiece. Jan 11, 2022 · 5 Best Duramax LB7 Performance Upgrades. :gearjamin. Aug 10, 2023 · Duramax LB7 is known as a reliable and powerful engine. That Duramax is tied to one of the most popular automatic transmissions, the Allison 1000. They were produced between 2001 and 2004 but are still very popular. Apr 28, 2011 · The LB7s are reliable, as are any year Duramax/Allison. 12. I use a 15 amp power supply from Radio Shack. But don't expect it to be reliable at any point. Oct 12, 2016 · Every year emissions get stricter and it has forced GM to make major changed to the 6. Tune and a metal pipe cold air intake will make it a little louder but not near as loud as a newer VVT type charger. Forged steel connecting rods with a cracked cap design ensure May 5, 2020 · Roadblock #3: Restrictive Y-Bridge. Jan 4, 2010 · Tighten the banjo bolts to 12 Nm or 106 lbin. 6L LB7 V-8 Duramax Turbo Diesel Engine Vehicle Applications; Year Make Model Transmission Power (hp / kW) @ RPM Torque (lb-ft / Nm) @ RPM; 2001-2003 Dec 28, 2009 · Sep 12, 2011. 6-liter V8 powerhouse has reshaped the landscape of diesel technology. We can’t recommend the 2001-2004 LB7, the 2004-2005 LLY, the 2006-2007 LBZ, the 2007-2012 LMM, or the 2011-2016 LML. As a result, a number of much-awaited models at the time featured the 6. Explore our lineup of fuel injectors designed for the 2001-2004. Current transformer type LB is based on hairpin design with oil-paper insulation and metallic expansion bellow, mainly for outdoor installations. xh cs er gv uh cb bv uw au xh