old_skool_SR Posted January 23, 2007 Report Share Posted January 23, 2007 I'm rebuilding my 3k engine right now but later this year, we're gonna drop a race spec 4AF engine. what tranny should i use? will the k40/k50 tranny fit the 4AF engine? Quote Link to comment Share on other sites More sharing options...
philba Posted January 23, 2007 Report Share Posted January 23, 2007 The 4-AC uses the T-40 and T-50 so I'm thinking that the 4-AF would the T series box as well Quote Link to comment Share on other sites More sharing options...
bruce Posted January 24, 2007 Report Share Posted January 24, 2007 You would need an A-series bellhousing, i.e 3A or 4A. I think a K50 gearbox did come with a 3A bellhousing k50, but it would be better off having a T50 from a AE70, AE71, or AE85. It should have 4A written on top of the bellhousing. Quote Link to comment Share on other sites More sharing options...
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