H2 Duramax Diesel Conversions

Velocity Customs

H2 Duramax Diesel Conversions

With over 20 years of experience we have the right powertrain solutions to meet your high performance needs.


H2 Duramax Conversion With Installation

• 2006-10 LBZ/LMM Duramax engine
• 6 Speed Allison 1000 transmission



Do It Yourself Basic Installation Kit

• Weather resistance ECM/TCM housing
• High-flow driver side exhaust manifold
• Custom Aluminum radiator
• Custom Aluminum intercooler
• Custom high-flow intercooler plumbing
• Custom Hgh-flow plumbing
• Custom high-flow turbo inlet with air-intake system
• Stainless steel cooling system plumbing
• Custom Speedhut guages
• Power steering lines
• Custom trans cooler with lines and fittings
• Air conditioning lines
• Custom motor mounts
• Custom transmission cross member
• 4” turbo back exhaust system
• Custom HD 1 ton drive shafts and u-joints
• 3” body lift
• Fuel tank lowering kit
• Fuel system upgrade with priming bulb relocation bracket
• Custom cooling system piping


Do It Yourself Installation Kit & Drivetrain

• 2006-10 LBZ/LMM 1000 transmission
• 6 speed Allison 1000 transmission
• 243xHD electronic 2WD/4WD transfer case
• Custom engine and transmission tuning
• Custom integrated engine and transmission harness
• Weather resistant ECM/TCM housing
• High-flow driver side exhaust manifold
• Custom aluminum radiator
• Custom aluminum intercooler
• Custom high-flow intercooler plumbing
• Custom high-flow plumbing
• Custom high-flow turbo inlet with air-intake system
• Stainless steel cooling system plumbing
• Custom Speedhut guages
• High performance fuel system [including lift pump]
• Power steering lines
• Custom trans cooler with lines and fittings
• Air conditioning lines
• Customer motor mounts
• Custom transmission cross member
• 4” turbo back exhaust system
• Custom HD 1 ton driver shafts and u-joints
• 3” body lift
• Fuel tank lowering kit
• Fuel system upgrade with priming bulb relocation bracket
• Custom Cooling system piping

Custom Build Services

• Cylinder Head Rebuilding
• Cylinder Boring & Honing
• Connecting Rod Rebuilding
• Block & Head Resurfacing
• Engine Builds
• Dyno Testing & Tuning

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