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2004.5-2005 6.6L GM Duramax LLY Recipes for Horsepower

We get a lot of calls asking, "What do I need to do to my truck to attain a certain horsepower level?" If you've been wondering the same, below are various "recipes" of parts that are needed to reach ... read more

ARP 230-4201 Diesel Head Stud Kit 01-15 6.6L GM Duramax ARP-230-4201 15.00 ARP 230-4201 Diesel Head Stud Kit 01-15 6.6L GM Duramax ARP 230-4201 ARP Head studs are a must if you are running in excess of 45psi of boost on your Duramax Diesel. Good insurance against head gasket failure. BD Valve Body 04.5-05 6.6L Duramax LLY Allison 1000 Transmission 1030471 BD-1030471 12.00 BD Valve Body 04.5-05 6.6L Duramax LLY Allison 1000 Transmission 1030471 BD-Power 1030471 Diesel Power Products carries the BD Valve Body for 04.5-05 6.6L Duramax LLY Allison 1000 Transmission 1030471 BD Performance Allison 1000 Transmission 04.5-05 6.6L LLY Duramax BD1064722 / 1064724 BD-1064724-Main 0.00 BD Performance Allison 1000 Transmission 04.5-05 6.6L LLY Duramax BD1064722 / 1064724 BD-Power 1064724 Disel Power Products carries the BD Performance Allison 1000 Transmission for 04.5-05 6.6L LLY Duramax BD1064722 / 1064724 BD 1071240 Triple Torque Force Converter 01-16 6.6L GM Duramax with Allison 1000 BD-1071240-main 0.00 BD 1071240 Triple Torque Force Converter 01-16 6.6L GM Duramax with Allison 1000 BD-Power 1071240 Power Products carries the BD Triple Disc Torque Converter 2001-16 6.6L GM Duramax with Allison 1000 Transmission 1071230 1071231 Mag-Hytec Allison 1000 Transmission Pan 01-16 6.6L MH-A1000 15.00 Mag-Hytec Allison 1000 Transmission Pan 01-16 6.6L Mag-Hytec A1000 Diesel Power Products carries the Mag-Hytec Allison 1000 Transmission Pan for 01-16 6.6L S&B 75-5102 Cold Air Intake System 04.5-05 6.6L GM Duramax LLY SB-75-5102-Main 0.00 S&B 75-5102 Cold Air Intake System 04.5-05 6.6L GM Duramax LLY S&B Filters 75-5102 Diesel Power Products carries the S&B Cold Air Intake System for 04.5-05 6.6L LLY Duramax 75-5038 South Bend Dyna Max Ceramic / Kevlar Performance Clutch with Solid Flywheel 01-06 6.6L GM Duramax SBC-SDM0105-Main 0.00 South Bend Dyna Max Ceramic / Kevlar Performance Clutch with Solid Flywheel 01-06 6.6L GM Duramax South Bend Clutch SDM0105DFK South Bend Clutch's Performance Ceramic / Kevlar replacement clutch is a great upgrade for modified Duramax's below 425 RWHP BD Billet Steel Flex Plate 01-18 GM Duramax BD-1041260 15.00 BD Billet Steel Flex Plate 01-18 GM Duramax BD-Power 1041260 BD offers up their 29.3 SFI rated Billet Steel FleX-Plate for the Allison backed Duramax! Unlike other manufacturers, BD is reusing the stock flywheel assembly to reduce costs and unnecessary part changes. S&B Turbo Inlet Manifold 04.5-05 6.6L LLY Duramax 76-1006B SB-76-1006B 5.00 S&B Turbo Inlet Manifold 04.5-05 6.6L LLY Duramax 76-1006B S&B Filters 76-1006B S&B's New Turbo Inlet Manifold provides unrestricted airflow for you LLY. EFILive AutoCal Tuner | 01-07 Duramax | by Kory Willis of Power Performance PPEI-AUTOCAL 5.00 EFILive AutoCal Tuner | 01-07 Duramax | by Kory Willis of Power Performance PPEI | Power Performance Enterprises, Inc | EFILive by Kory Willis PPEI-AUTOCAL Unleash the power of your 2001-2007 Duramax with a preloaded EFILive AutoCal from PPEI. Fleece Performance Street 63mm FMW Cheetah Turbocharger 04.5-10 GM Duramax FPE-VNT63-STREET 50.00 Fleece Performance Street 63mm FMW Cheetah Turbocharger 04.5-10 GM Duramax Fleece Performance Engineering FPE-VNT63-STREET Drop-in performance for your Duramax that delivers is what you can expect from the Billet VNT from Fleece! Fleece Performance CP3K Injection Pump 01-10 6.6L GM Duramax FPE-DMAX-CP3K 15.00 Fleece Performance CP3K Injection Pump 01-10 6.6L GM Duramax Fleece Performance Engineering FPE-DMAX-CP3K Diesel Power Products carries the Fleece Performance CP3K Injection Pump for 01-10 6.6L GM Duramax

We get a lot of calls asking, "What do I need to do to my truck to attain a certain horsepower level?" If you've been wondering the same, below are various "recipes" of parts that are needed to reach certain power levels along with any companion parts that you'll need to ensure the overall drivability and integrity of your truck. For example, you could grab the highest setting on your programmer to make 500HP on a dyno run but for longevity sake, you would be better off with a cold air intake, exhaust, lift pump, and a lower setting on the tuner. Or we will recommend an upgraded injection pump once you've reached a power level where we have found it to be necessary. We are going to mention a lot of specific products, and these are products that we prefer through our experience. There are, of course, many other options available that can get the job done, as well.

Bear in mind that even though GM says your truck is 310HP, they are quoting flywheel horsepower, not rear wheel horsepower. On a dyno, the actual rear wheel horsepower for these trucks is about 260HP. Please don't get sucked into the trap of adding all of the manufacturer stated horsepower gains for the individual products together to estimate your horsepower. This will only lead to disappointment! There is typically a substantial amount of overlap when combining products, but this is a necessary evil.

Click on any of the below items to be directed to that product page for more information. As always, feel free to give us a call and we would be happy to assist!

300 Horsepower Drivetrain Upgrades 400 Horsepower Drivetrain Upgrades 500 Horsepower Drivetrain Upgrades 600 Horsepower Drivetrain Upgrades

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