ALLISON TRANS KIT 01-04 LB7 4WD

Product Description

BD Performance TowMaster Transmission Package, 01-04 Chevy-GMC Duramax LB7 Allison 1000 4wd

The stock drivetrain was designed to handle the output of the stock engine, but not much more. BD Performance transmissions use revised oil circuits, extra clutches and stronger parts to handle up to 300% more power and torque than the stock transmission. All BD Performance transmissions come with a heavy-duty transmission pan. Not warranted for Race or Sled Pull use.

OEM transmission helical gears and engine torque thrust causes stock plastic and Babbitt thrust washers to fail. The contaminated oil and damages solenoids and valves. BD removes the thrust washers and installs roller bearings throughout the transmission which reduces oil contamination, maintains tolerances, reduces heat, and prevents premature solenoid failure.

TRANSMISSION:

• Increase the durability of your drivetrain
• BD Aluminum HD deep transmission pan, increases oil capacity by 3.5qt
• High energy frictions
• Revised oil circuits
• New converter lock up valve to boost lock-up pressures
• New A & B trim valves deliver full line pressure to the clutches
• Increased clutch count
• Clutch Count: C1, 8 clutches (14% increase over stock)
• Clutch Count: C2, 7 clutches (17% increase over stock)
• Clutch Count: C3, 7 clutches (75% increase over stock)
• Clutch Count: C4, 7 clutches (17% increase over stock)
• Clutch Count: C5, 7 clutches (17% increase over stock)
• Each transmission is dyno tested

TORQUE CONVERTER:

• Enhanced Stall – Street/Towing applications
• Torque multiplying cast aluminum stators
• Lower rpm response than the stock converter
• More efficient operation
• Less heat and better fuel economy
• Stamp-forged steel front cover
• Furnace-brazed fins
• Up to triple the amount of lock-up clutch material

Fits 2001, 2002, 2003, 2004 6.6L LB7 Duramax Allison 4wd