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Installation Tips

  • If you are only upgrading your torque converter, verify that your transmission is operating correctly, no codes are present and the transmission fluid looks and smells good.
  • Safety first, always make sure the vehicle is secure before getting under it.
  • A good way to verify your new CDS converter is seated all the way is to measure the old one while it is still in the transmission. Using a straight edge, check the bellhousing to converter pad depth and compare to your new converter.
  • Check flexplate for cracks or worn teeth – very easy at this point.
  • Check block dowell pins and bellhousing holes for wear.
  • Make sure the converter bolts will fit through the flexplate. On some applications we use larger bolts for increased durability.
  • Place the converter on the flexplate to ensure the bolt circle is correct and that the converter pilot is engaging in the crank.
  • Verify the crank bore is clean and that the converter moves freely inside it. Sometimes the paint and/or clearcoat may have to be polished on the converter pilot.
  • If replacing the transmission, flush the cooler circuit for a clean install.
  • Put about 1/2 quart of fluid in the converter for pre-lube. This may take a few minutes.
  • Re-install the transmission and bolt to block while continually checking the converter clearance.
  • You're looking for 1/8" - 3/16" converter clearance (or pull back). Typically a drill bit can be used to check this measurement.
  • If excessive clearance ( > 3/16"), you will need to add shims...use the supplied SAE washers to bring clearance to an acceptable level. Our standard bolt kit (GM) has both a .060" and ..090" flat washer to be used as shims (only if needed).
  • Depending on the converter model, we have included new hardened bolts, washers, and medium Loctite. You can use the washers as spacers for proper converter clearance.
  • Proper torque specifications: M10 x 1.5 Bolts (50ft*lb) and 7/16" (58ft*lb)
  • If you have no clearance, STOP – the converter is probably not stabbed all the way.
  • Add a few more quarts to the transmission, make sure the pan is full and start it up.
  • Continue adding fluid until full. You will need to check several times during this procedure. Then, road test to verify proper operation and recheck fluid.
  • An external cooler and temperature gauge is highly suggested. High temps will kill the trans. Anything over 180F is getting too high. Over 200F is too high.
  • If you have the 6 speed 6L80 or 6R80, triple check the fluid level – they are very sensitive.