Chevy Transmission Spacer Plate .125 Manual Auto T56 4l80e 4l60e TH350 Powerglide LS SBC BBC LS1 LT Engine 551820-125 Small Block Chevy, Big Block Chevy, LS, & LT Engine (Gen I - Gen V) T56, Powerglide, TH350, TH400,4L60E, 4L80E 1/8" (.125")