Maximizer™ Conversion Kits
TCI® offers many different types of conversion kits to owners of General Motors vehicles to enable interchange of various styles of GM transmissions. This is particularly useful for heavy load vehicles that may benefit from a heavier duty transmission for dependability. All kits provide the necessary adapter plate, output shaft and hardware required for installation. The TCI® 329900 kit also contains dust cover, dipstick, detent cable and replacement shift indicators. Kits will require some degree of drive line modifications.

Converting from: Converting to: Application Transfer Case Vehicle Modifications Required Part No. Chevy TH350 Chevy TH400 Pre-1980 4WD 203 or 205 shorten rear driveshaft 3.7" lengthen front driveshaft 3.7" 229900 Chevy TH350 Chevy TH400 1980-Later 4WD GM w/ 3" spacer to transfer case 208 shorten rear driveshaft 3.7" lengthen front driveshaft 3.7" 229901 Chevy TH350 Chevy TH400 1980-Later 4WD GM w/ 5" spacer to transfer case 208 shorten rear driveshaft 3.7" lengthen front driveshaft 3.7" 229902 700-R4 (4L60E) Chevy TH350 All 700R4 4WD V8 208 None 329900 700-R4 (4L60E) Chevy TH400 All 700R4 4WD V8 208 shorten rear driveshaft 15/16" lengthen front driveshaft 15/16" 229901