Skip to navigation Skip to content
BET Performance & Engineering Logo with Transmission Plate Graphic
  • Product Categories
    • G80 Differential Rebuild Service
    • Rebuilt GM G80 and Posi Differentials
    • GM G80 Gov Lock Differential Parts
    • Transmission Pans With Drain Plugs
    • Transmission Servos and Parts
    • Transmission Tools
    • Automotive Tools
  • Contact Us
  • Information
    • Differential Usage Definitions
    • G80 Description and Operation
    • Small and big block typical facts
    • G80 Case Casting Numbers
  • Policies
  • About
  • Home
  • About
  • Advanced Search
  • Cart
  • Checkout
  • Contact Us
  • Information
    • Differential Usage Definitions
    • G80 Case Casting Numbers
    • G80 Description and Operation
    • Small and big block typical facts
  • My Account
  • Policies
  • Refund and Returns Policy
  • Shop
  • $0.00 0 items
Home / Cart

Cart

Your cart is currently empty!

Browse store

New in store

  • Gov-Lock 8.5" posi diffferential GM G80 Gov-Lock 8.6" (8 5/8) 10 Bolt 30 Spline Posi Differential
    8.6″ (8-5/8) G80 10 Bolt 30 Spline Posi Locking Differential With New Clutches
    $499.99
    Add to cart
  • CORVETTE 8L90 TRANSMISSION PAN WITH OEM STYLE DRAIN PLUG
    Camaro 8L90 Transmission Pan With OEM Style Drain Plug
    $149.99
    Add to cart
  • GM G80 Gov-Lock 11.5 inch (11-1/2) 14 Bolt Floater Locking Posi Differential
    New 11.5″ (11-1/2) G80 14 Bolt 30 Spline Posi Locking Differential
    $1,099.99
    Add to cart
  • CORVETTE 8L90 TRANSMISSION PAN WITH OEM STYLE DRAIN PLUG
    Corvette 8L90 Transmission Pan With OEM Style Drain Plug
    $149.99
    Add to cart

Transmission Tools and Components

BET Engineering specializes in GM differential rebuilds, GM servos, transmission rebuild tools and other parts. Need a drop in billet servo for a 700-R4 or 4L60E series? We have what you need.

Upgrade your 700R4, 4L60, 4L60E or 4L65E with an increased hold servo!

G80s and other POSI units

In addition to our GM differential rebuilds, we also offer a GM locking differential, posi-traction carrier rebuild service. We can repair your original G80 unit, so your carrier shimming will not change. Send us your core for evaluation or purchase a rebuilt differential from our online store at a fraction of the cost of a new one.

We Buy Differential Cores!

Do you have a retired Gov-Loc or other differential in your garage? We'll pay $75 for a rebuildable unit, contact us for more information.

G80 Differential Rebuild Service

BET Engineering can rebuild your troubled G80 unit. We work with G80 differential units that range from the small 7.5 inch unit all the way up to the 11.5 inch. In most cases, we can even install new GM components.

Contact us for more details.

© BET Performance & Engineering 2026
PoliciesBuilt with WooCommerce.