Welcome to BET
Home of G80 and GM transmission engineering and GM differential rebuilds
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.