Guest low'n slow Posted October 16, 2009 Share Posted October 16, 2009 I found a transmission at a local wrecking yard. It has the nailhead bellhousing. The tag on the side says 553 and BN-64-37000.The yard had written 1964 Buick on it. It did not have a torque converter and they gave me one from a turbo 400.Is this a switch pitch? How would I be able to tell. Does any torque converter work if it is a switch pitch?Thanks for your patience.Doug Link to comment Share on other sites More sharing options...
RivNut Posted October 16, 2009 Share Posted October 16, 2009 (edited) Doug,The 64 on the tag indicates it came from a 1964, The BN code indicates it came from a console shifted 425 (in '65, the BN code was for a 3.07 rear axle, Buick is pretty consistent with these kinds of numbers, so I would imagine that the same would be true for '64.)It is NOT a switch pitch trans and requires the conventional torque converter - TH400. The easiest way to tell a switch pitch trans from a conventional trans is by the sending unit on the driver's side of the transmission. Switch pitch transmissions have two male connectors on them; conventional transmissions have only one, it's for the kick down feature. If it were a switch pitch, it would require a switch pitch converter.Ed Edited October 16, 2009 by RivNut spell check (see edit history) Link to comment Share on other sites More sharing options...
Guest low'n slow Posted October 16, 2009 Share Posted October 16, 2009 I knew you would have the answer. It has one male connection, so I'm good to go. It has been sitting for several years so I assume it will need to be gone through.I know what I will be doing this weekend.Thanks Link to comment Share on other sites More sharing options...
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