2015 Product
BD 2015-2016 Fall Catalog

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Allison 1000 Transmission


While the Allison is suitable for stock applications, we’ve found that it does have its limitations— particularly when flywheel horsepower exceeds 370 horsepower. That’s when the stock clutch packs can begin to slip, putting the computer in the dreaded “limp home” mode and once a clutch has slipped, the next time it will slip easier and easier.

Highlights of our modifications:
BD rigid aluminum heavy duty transmission pan
   • Adds 3.5qt extra oil capacity
   • Reduces case flex
   • Reduces internal oil leakage
   • Heat-dissipating fins keep temperature down
   • Magnetic drain plug
New convertor lock up valve to boost lock-up pressures
Updated lube
Updated regulator
Updated pressure release spring
20% more friction surface
High energy clutch material
Added extra frictions
Modified power pistons
Modified hydraulics
New return springs
Increased main line oil pressure
Modified separator plate for short crisp shifts
New A & B trim valves, springs and solenoids
WARRANTY: 36-month / 150,000 mile limited exchange warranty on non-competitive, racing or sled-pulling applications. Some conditions apply - See warranty statement for further details.

Allison 1000 Clutch Count

C1 6 8
C2 6 7
C3 4 6
C4 5 6
C5 6 7

BD Triple Torque Force Converters
   • One-piece billet cover prevents warping
   • Trapezoid teeth hold the clutches
   • Three times the holding power over stock units
   • Less friction wear and no rattling
   • BD’s own designed cast stator
BD FleX-Plate
   • Meets SFI 29.3

Check out Diesel Army's story on building 48RE transmission with BD parts!


Product Warranty See product description
  • Available Makes
  • Chevy
  • Available Engines
  • 2001 - 2010 6.6L
  • Available Transmissions
  • Automatic
Product Rating
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    Installation: 3 points
    Performance: 3 points

2001-2004 Duramax 6.6L LB7 Transmission Kits:
1064702    2001-2004 LB7 Allison 1000 2wd
1064704    2001-2004 LB7 Allison 1000 4wd

2004½-2005 Duramax 6.6L LLY Transmission Kits:
1064722    2004½-2006 LLY Allison 1000 2wd
1064724    2004½-2006 LLY Allison 1000 4wd

2006-2007 Duramax 6.6L LBZ Transmission Kits:
1064732    2006-2007 LBZ Allison 1000 2wd
1064734    2006-2007 LBZ Allison 1000 4wd

2007½-2010 Duramax 6.6L LMM Transmission Kits:
1064742    2007-2010 LMM Allison 1000 2wd
1064744    2007-2010 LMM Allison 1000 4wd