# 550. TH350 / TH400 9 1/2 Inch Billet Converter, Turbo Raptor 9.
” Turbo Raptor 9 ” Fits TH350 and TH400 transmissions. This heavy duty 9 1/2 inch billet converter has furnace brazed fins, hard input splines, balloon plate and bearing construction for added strength. Can be ordered in stall speeds of 2000 to 6000 RPM. Good up to 1000 horse power. This converter has a very fast spin up time.