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ST400 Transmissions


RivNut

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I was looking for  code number to answer a question that had been posed and looked at this chart from Teambuick.com

 

In looking at the '66 codes, it states that "425 V8 Gran Sport and Riviera" were equipped with the  BS transmission.  Does this mean that all '66 RIvieras have the same transmission as the '65 Gran Sport?  

 

YEAR APPLICATION CODE
1964 300 V8 LeSabre BU
  401 V8 column shift BJ
  401 V8 console shift BK
  425 V8 column shift BL
  425 V8 one carb console shift BN
  425 V8 two carb column shift BP
  425 V8 two carb console shift BQ
1965 300 V8 LeSabre BU
  401 V8 3.07 axle BJ
  401 V8 Riviera (3.23 axle) BR
  425 V8 4bbl. carb 3.07 axle BN
  425 V8 3.23 axle BT
  425 V8 two carb 3.07 axle BO
  425 V8 two carb Riviera (3.42 axle) BS
1966 340 V8 LeSabre BU
  401 V8 BR
  425 V8 Grand Sport & Riviera BS
  425 V8 all others BT
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I thought the BS had higher shift points as well as firmer shifts.  What I'm curious about are difference between the BS and all the others.  Do all the others have the same valve bodies?  I imagine some differences are speedometer drive gears for different rear end ratios and linkages for different shifters, but what about valve bodies?

Edited by RivNut (see edit history)
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As you know '64's are by themselves. "65 & '66 the governor is set to shift at a slightly higher shift point & the separator plate the two holes that pass the fluid to the clutches to fill faster are slightly larger by about .020" for a firmer shift.

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I understand that.   So let's concentrate on the 1964's only.  What would be the difference between the BN and the BQ. BN is the console shift single four barrel 425; the BQ is the  dual four barrel 425.  What's the difference between the console shift 425 and the column shift 425?

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