A transmission can fail for almost as many reasons as there are parts inside, and often, it’s easier to replace it than repair it. You are not only paying for the new or rebuilt replacement. In this instalment I got around to rebuilding the gearbox for my 1970 Alfa GTV.Check out more videos about the 1970 GTV Build here: https://www.youtube.com/p. Gearbox Rebuild Program M any seal vendors tend to group gearboxes with pumps and electric motors but there are too many internal differences between these basic rotating machines for us to ignore. To try and cover everything using labyrinth or lip seal technology is not a great idea. If your gearbox repair program has not been updated in. GearTec has emerged as an industry leader for industrial gearbox repairs, rebuilds, and analysis. With onsite engineers, reverse engineering, disassembly, gear manufacturing and rebuild capabilities – GearTec is the “ one-stop-shop ” for small, medium, and large rebuilds. New small overhaul rebuild kit for bert aluminum and magnesium transmissions for modified, late model, and street stock racing, 91, tranny, imca, ump, usmts, etc, clutch disc pack, tailhousing bushing and rear seal, input shaft oil seal, shifting forks retaining pins, shifting arm seals, main case shifting rod plugs, hydraulic clutch cup, front counter shaft o-rings.