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Old 10-30-2022, 08:01 AM   #18
b454rat
Senior Member
 
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,454
Re: Is this a TH400 or 4L80??

3/4 and 1 ton 1980 and older could have the 400/205. After that, then only 1 tons got the combo. The early 80s had the synchro, but can be converted over. OffRoadDesign.com has parts to rebuild 205s. Ford is driver drop for ever, Dodge was passenger like GM, up to 93 when the NBS style came out.
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2000 GMC CCSB 454/4L80 6” lift SAS
1999 Chevy CCSB 454/NV4500 6” lift
1999 GMC Yukon 350/4L60 4" SAS
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