The moment our New Edge GT launched at Auto Club Dragway shortly after we installed this month’s drivetrain mods, we knew it was going to be significantly faster. How could we tell? Because with the ...
GM’s 4L80E overdrive automatic is the latest in a continuing legacy of rugged Turbo-Hydramatic transmissions from Chevrolet. Fifty years ago, the TH350 and the TH400 transmissions were a new ...