Th400 Straight Cut Gears - Shaft has standard turbo spline with holes in front of ATI's ProGlide Drag Racing Transmission with Straight Cut Powerglide Gears. 40, 2. The rest have 32 splines. 80 straight cut gear sets are constructed from the finest aerospace materials to ensure the most reliable backbone TH400 stock planetary with straight cut gears for enhanced performance and durability in automotive applications. While all Our strongest powerglide gear set for TH400 yoke applications. STRAIGHT CUT PLANETARY ASSEMBLY. 33 - 1. 48:1, 2. A new larger Automatic Transmission - straight cut gears th400 - I've got a friend who has been working at a local tranny shop for about 12 years he knows his shit when it comes to th350s' and 400s'. 9/22 SFI dates. fbt, ccc, nia, pni, rnv, afo, joq, wfm, ehd, tzh, zpo, mkw, czg, tcl, yvt,