#6X-400-S. TH400 / TH350 Master Blaster Converter, 10 1/2″ Billet, 1200 HP NLU.
” Master Blaster ” Fits 400 / 350 transmissions. This is a 10 1/2 inch non-lock-up balanced converter with your choice of stall speeds from 2600 to 6000 RPM, bearing construction, furnace brazed fins, extra large balloon plate and a billet front cover. Rated at 1200 horse power with the super sprag installed. Lower 60 foot times and improved quarter mile times, an average of 1/2 second reduction!