What To Look For Today, powerglide transmissions are reliable up to as much as 3000 horsepower in certain applications. The backbone of this entire system is the planetary gear assembly. The modern aftermarket gear set for powerglide transmissions should feature many of these upgrades as found in our own BTE powerglide planetary gear sets. Straight or spur cut gears are stronger and have less thrust loading USA made 9310 vaccumelt steel gears that have been heat treated and processed for maximum durability The output shaft is made of forged steelRead More