GM TH400 racing applications quickly push the heavy, cast-iron OE forward drum over its limits. To dramatically reduce weight and deliver the ultimate in reliability and transmission performance, #Sonnax introduces this new heavy duty forward drum — a high-strength, chromoly steel upgrade just 3 oz heavier than a common aluminum drum. 💪💪 Watch this video to get a full breakdown of all the race-ready features, plus the heavy and extreme duty input shaft options for a complete Sonnax build. Clic

One of our Xtreme Heavy Duty TH400 transmissions for Mueller Performance going through the paces on our Superflow Dynos and Flowbenches transmission dyno. We test shift function, transbrake function (1 2 transbrake in this one!), line pressure, cooler flow, cooler pressure, and dump valve function (which you can see towards the end of the test). #teamhughesperformance2020 Reid Racing Sonnax Raybestos Raybestos Brand Raybestos Powertrain Fragola Performance Systems | Hughes Performance

CHEVROLET TH400 TRANSMISSION ( Full Video on my page ) #chevyracing #chevrolet #fsptransmissions #turbo #transmissiontech #specialist #chevroletniva #chevroletchevelle | Tyler Jackson