- 1964-1967 SP400 Parts Images
- How to wire the Switch Pitch on a Buick Transmission
    - 400 auto codes
- BOP Bellhousings and Automatic Identification
Results 1 to 7 of 7

Thread: Open driveshaft dynaflow

  1. #1
    Join Date
    Nov 2008
    Location
    Sisters OR
    Posts
    454
    Rep Power
    0

    Open driveshaft dynaflow

    I went and picked up a 401 today. I checked the code and it indicated a 4 barrel 401 1963 year. What was interesting was the dynaflow attached to the engine. It was a open drive shaft model, I thought all dynaflows were enclosed drive shaft type. So now the question comes up, where the later dynaflows much improved over the one that came in my 52? If I put this behind a 425 would the engine rev up a lot to accelerate or will it lock up early and utilize the low RPM torque of a 425? I am sure it is in good condition, the trans came out of a 63 Buick converted to a Hurst. It only showed 29,000 miles. Since there is a conventional seal at the drive shaft input it should not leak when sitting around like the old enclosed drive shaft type do. If you have one what is your opinion and experience with one?

  2. #2
    I had/have a 63 Riv with the dynaflow and 401. It had lots of low end grunt and would spin the tires easily.
    Steve B.



    67 GS 525 Buick Stage IV
    66 GS Convertible
    65 GS HT
    63 Riv
    02 Subaru WRX Turbo
    03 Ford Cobra Convertible (Factory Supercharged)

  3. #3
    With a "Nail" behind the DynaFlow it would be MUCH improved over the straight "8". The more "Modern" of the DynaFlow's started in '56. Buick went to open drive in '61 through '63, the last year of the DynaFlow. In actuality the DynaFlow had a higher torque multiplication in "Low" in the "High Stall" switch pitch position than a TH400 in 1st. gear & high stall, so tire roosting should not be a problem unless there's something wrong with the "Nail" installed.
    Tom Telesco
    Classic and Muscle Automotive
    12 Cook St.
    Norwalk, CT 06853-1601
    Day Phone 203-324-6045 ET
    NailHead Mini-Starters '53-'66
    Adjustable Roller Tip Rocker Arms - All NailHeads
    Custom forged pistons
    Front & rear neoprene seals
    Many other "Nail" parts
    "If I can't get it, you don't need it!"

  4. #4
    Join Date
    Nov 2008
    Posts
    327
    Rep Power
    0
    Open driveline in 59.

  5. #5
    As stated in my reply, '61 was the 1st. year for open drive & DynaFlow. So that makes 1960 the LAST year of the torque tube. It was NOT open drive in '59, unless someone converted it as it DID NOT come that way from the factory.
    Tom Telesco
    Classic and Muscle Automotive
    12 Cook St.
    Norwalk, CT 06853-1601
    Day Phone 203-324-6045 ET
    NailHead Mini-Starters '53-'66
    Adjustable Roller Tip Rocker Arms - All NailHeads
    Custom forged pistons
    Front & rear neoprene seals
    Many other "Nail" parts
    "If I can't get it, you don't need it!"

  6. #6
    Join Date
    Nov 2008
    Posts
    327
    Rep Power
    0
    My apologies, I have the taste of crow. I thought I knew everything. Thanks for bringing me back to reality.

  7. #7
    No worries. I have the same thing that happens to myself. Many of us have graduated from the 3 R's to the "old age" C S's. Can't hear, see or remember sh----t!!!!!
    Tom Telesco
    Classic and Muscle Automotive
    12 Cook St.
    Norwalk, CT 06853-1601
    Day Phone 203-324-6045 ET
    NailHead Mini-Starters '53-'66
    Adjustable Roller Tip Rocker Arms - All NailHeads
    Custom forged pistons
    Front & rear neoprene seals
    Many other "Nail" parts
    "If I can't get it, you don't need it!"

Similar Threads

  1. Denny's Driveshaft
    By 66 buick guy in forum General Chat!
    Replies: 6
    Last Post: 07-27-2011, 06:21 PM
  2. WTB 62 lesabre driveshaft
    By lrg1965 in forum Transmissions and Drivelines...
    Replies: 8
    Last Post: 11-08-2009, 04:50 PM
  3. 65 Riviera driveshaft
    By gillt60 in forum Transmissions and Drivelines...
    Replies: 2
    Last Post: 09-20-2008, 01:29 PM
  4. looking for dynaflow driveshaft spring
    By justjoe in forum Transmissions and Drivelines...
    Replies: 6
    Last Post: 09-28-2007, 02:02 PM
  5. dynaflow closed to open driveshaft conversion
    By camccardell in forum Transmissions and Drivelines...
    Replies: 15
    Last Post: 11-22-2005, 04:45 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
TeamBuick.com Privacy Policy