Your trusty steed is equipped with a 700R4/4L60E transmission. You want to race (or you already have and broke) it, and either can’t afford a swap or are simply too hard-headed to believe the memes and arm-chair crew-chiefs telling you to go with a 4L80E.
From The Driveway Engineer, here are the upgrades considered mandatory to help your driveline stay in one piece at the race track.
700R4/4L60E Transmission Basic Upgrades for Racing
If you are seriously racing on a 4L60E, these upgrades are enough to get you started at the track. As with anything, the sky, and your budget are the limits.
Still hunting for yout transmission? Find donor vehicles that have the transmission (or engine, chassis) you need.