Mar 09, 2016 · Fortunately we have the definitive simple lb7 mod that you should consider right out the gate. Fleece Performance states that their modified intake horn will “Increase your LB7’s potential with this simple, but effective upgrade. Back-to-back dyno pulls showed an increase of 15hp with this Fleece Performance Modified LB7 Intake Horn .... *Horsepower: 235 hp @ 2,700 RPM (2001) 300 hp @ 3,100 RPM (2004) *Torque: 500 lb-ft @ 1,600 RPM (2001) 520 lb-ft @ 1,800 RPM(2004) Max. Engine Speed: 3,250 RPM. 6.6L DURAMAX LB7-LML. ALLISON 1000. MAKE. YEAR. ENGINE. TRANSMISSION. GM. 2001 - 2016. 6.6L DURAMAX LB7-LML. ... This heat is essentially lost power which results in a lower transmission life, performance and fuel economy. The loss of energy in this process can be calculated. Suppose we have a converter where the drive fan (impeller) is turning. Dec 24, 2021 · What Years Fall Under 6.6L Duramax LB7? In 2001, General Motors discontinued their 6.5L Detroit engine, replacing it with the 6.6L LB7 Duramax engine. The Duramax was a much-needed update: it introduced the new common-rail direct fuel injection system. This improvement decreased emissions, and it improved the engine’s overall performance.. 2001-2004 6.6L Duramax LB7 Diesel Performance Upgrades. Chevy/ GMC Duramax 6.6L LB7 Diesel Performance Tuners, Downloaders & Modules; Chevy/ GMC Duramax 6.6L LB7 Diesel Exhaust Systems & Components; Chevy/ GMC Duramax 6.6L LB7 Diesel Exhaust Stacks; Chevy/ GMC Duramax 6.6L LB7 Diesel Intercoolers; Chevy/ GMC Duramax 6.6L LB7 Diesel Injectors. Fleece Performance Engineering FPE-INTAKEHORN Intake Horn (01-04 GM Duramax 6.6L LB7 High Flow LB7) 4.8 out of 5 stars 64. Save 6%. $99.75 $ 99. 75 $105.95 $105.95. Lowest price in 30 days. Get it as soon as Tue, Nov 30. FREE Shipping by Amazon. Only 18 left in stock - order soon. ... lb7 performance parts. This kit features a new drivers side IC pipe with billet dual seal clamp kit, 4" intake, high flow pedestal, 3" downpipe and more. It does not include a Y-bridge or coolant tank as some pictures show, these can be added for an extra cost. Current lead time for fabricated & powder coated parts is 20-25 business days from the time order is placed. Problem 6 - Allison transmission. To be honest, the Allison transmission that powers the LB7 Duramax is nothing to write about. You can limp the transmission if you add a coder that adds 100 horsepower or more. Moreover, the Allison transmission is susceptible to shift and will cut power immediately it detects any. Date Action Journal Vote; Apr 20, 2022: Indefinitely postponed: 1428: Jan 05, 2022: Title printed. Carryover bill: 4: Jan 26, 2021: Notice of hearing for February 05.