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#1 |
Modern day Fred Sanford
Join Date: Oct 2005
Location: Greeneville,TN
Posts: 330
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The official,unofficial guide to transfer case adapters
"What does this adapter fit or what adapter do I need to run transfer case X behind transmission Y" is a commonly asked question on this board and others that I frequent.This is a guide to help identify what parts you have or will need when swapping transmissions and cases.
Starting in around 1970ish until around 1977 the Th350/205 adapters used a center support bearing around the drive sleeve to hold it in place. ![]() The sleeve had a step cut in it to accommodate the bearing,whereas the later style didn't. Early style on the left,later on the right. ![]() The 78ish to 80 Th350/Np205 adapters are identical to the earlier style with the exception of the sleeve and bearing.All Th350/205 will have a four bolt pattern on the trans side. ![]() And racetrack or figure eight pattern on the case side. ![]() During that time GM also offer the 203 fulltime case behind the TH350's and they took a different adapter. Trans side. ![]() Case side. ![]() The Th400 adapters came in four different styles depending on the application. The 400/205 adapters were either the figure eight/racetrack pattern up until about 1984,or the later round pattern used until around 91 when the body style changed on the 1-tons. Figure 8/race tack pattern (trans side). ![]() Case side. ![]() The late style round pattern adapter. Trans side. ![]() Case side. ![]() Last edited by 1-tonmudder; 01-15-2009 at 11:22 PM. |
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