Announcement

Collapse
No announcement yet.

The All New 10-Speed Allison Transmission

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • The All New 10-Speed Allison Transmission

    There were some massive changes with the new 2020 Sierra HD and Silverado HD trucks, one of the biggest points of change was the upgrade from the 6-speed Allison transmission to the 10-speed Allison transmission. This will only be matched to the Duramax engines with many upgrades over the previous 6-speed transmission.

    Click image for larger version

Name:	10 speed allison transmission.jpg
Views:	1
Size:	138.9 KB
ID:	5338

    The 10-speed transmission has been developed by both GM and Allison in order to make it available for these trucks. The new transmission should allow for quicker and crisper shifts than the old transmission. This will improve the ability for the new trucks to get the power from their Duramax to the ground, with more torque being put to the ground in lower gears. The new standard ratio is lowered from 3.73:1 to 3.42:1 which enhances refinement and reduces engine speed for a more efficient truck. The transmission case is all new and has an integrated torque converter housing to increase overall structural rigidity through the vehicle's powertrain.

    Click image for larger version

Name:	10 speed allison transmission-1.jpg
Views:	1
Size:	137.4 KB
ID:	5337

    One of the new features also includes a factory integrated Power Take Off, PTO, eliminating the need for an aftermarket unit. The PTO is run off of engine speed allowing it to be used even when the truck is idling. A button inside the cab allows for users to adjust the load and torque output of the PTO.
    Gear Ratios :1 Allison 10L1000
    First 4.54
    Second 2.86
    Third 2.06
    Fourth 1.72
    Fifth 1.48
    Sixth 1.26
    Seventh 1.00
    Eighth 0.85
    Ninth 0.68
    Tenth 0.63
    So far the feedback for the new transmissions has been positive with better shifts than the outgoing 6-speed Allison transmission. Let us know how the all new 10-speed is working out for you!

  • #2
    Test drove a 2020 Silverado 3500 with the 10 L 1000, the upshifts were quick and smooth, downshifts were not felt on deceleration. The transmission was silky smooth and kept the engine rpm at the peak torque range of 1,600 rpm. Seems like a winner !

    Comment


    • #3
      Originally posted by Tonyg View Post
      Test drove a 2020 Silverado 3500 with the 10 L 1000, the upshifts were quick and smooth, downshifts were not felt on deceleration. The transmission was silky smooth and kept the engine rpm at the peak torque range of 1,600 rpm. Seems like a winner !
      We've heard nothing but good on the 10 speed transmission. Did you end up purchasing a 2020?
      Give us a call for all your Duramax needs! 877-469-3629

      Comment

      Please login or register to post.

      Working...
      X