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#524649 - 07/19/08 05:50 PM
Dynaflow exchange
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Member
Registered: 05/20/08
Posts: 46
Loc: SoCal
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Will a '57 Dynaflow bolt up to a '55 drivetrain?
I have a '55 Special and have a chance to pick up a rebilt '57 trans for a very reasonable cost.
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Archie
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#524655 - 07/19/08 06:09 PM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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Not easily. The bell housing on the 57 is smaller. It uses a flex plate rather than a flywheel. The ring gear is on the torque converter rather than the flywheel. I think the length is different and the drive shaft uses two universals with a different spline pattern so the 55 rear won't connect to the 57 trans..........Bob
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Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524656 - 07/19/08 06:10 PM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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Not easily. The bell housing on the 57 is smaller. It uses a flex plate rather than a flywheel. The ring gear is on the torque converter rather than the flywheel. I think the length is different and the drive shaft uses two universals with a different spline pattern so the 55 rear won't connect to the 57 trans..........Bob
_________________________
Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524671 - 07/19/08 07:46 PM
Re: Dynaflow exchange
[Re: Bhigdog]
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Long Time Member
Registered: 07/14/03
Posts: 3722
Loc: NE Georgia
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Bob, your stuttering is getting worse, maybe you should have it checked into. 
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Lamar in Athens, Georgia
BCA- 39474, 1959 BDBCA-0021, AACA-228846  1954 BUICK "The Beautiful Buy"1954 Roadmaster 76R, 2 DR HT - DoraB, (Irene,gone down under) 1954 Roadmaster 72R 4 DR - Buttercup, Dakota, Blue Belle, Virginia, Marietta, "High Society" (thank you Paul Meyer) 1954 Century 66R 2 DR HT- "54Muscle" w/3 speed stick(thank you Jim Schilf & Norm Kortus), Mary Jane Verkauft bis ein, wer 54 Buicks in Deutschland liebt, dankt Freund 1954 Special 41D 4 DR Deluxe Sedan 3 speed- Sugar Magnolia
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#524673 - 07/19/08 08:11 PM
Re: Dynaflow exchange
[Re: MrEarl]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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DUHHHHHHHHHHH! It's Deja-vu, all over again......
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Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524690 - 07/19/08 10:15 PM
Re: Dynaflow exchange
[Re: Bhigdog]
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Member
Registered: 05/20/08
Posts: 46
Loc: SoCal
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I would have a '55 trans as a parts donor if that is a help. The connection to the prop shaft seems like it would by just a U joint change and perhaps I could use the bell housing from my '55. The ring gear seems like it might be a killer though you did say not easily implying that it is possible.
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Archie
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#524743 - 07/20/08 07:48 AM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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Well I guess anything is possible given enough time, money, and effort. I guess the next question is why do it. There is little difference between a 55 and 57 trans, besides the size. The 57 was made smaller to accomadate a 2" lowering of the body line.........Bob
_________________________
Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524809 - 07/20/08 03:10 PM
Re: Dynaflow exchange
[Re: Bhigdog]
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Member
Registered: 05/20/08
Posts: 46
Loc: SoCal
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I was thinking to pick it up as a spare as it seems to be recently rebuilt and I am not sure how solid mine is.
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Archie
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#524817 - 07/20/08 04:47 PM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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Unless you get it really reasonably it's not much use to you except maybe trade goods........Bob
_________________________
Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524827 - 07/20/08 05:49 PM
Re: Dynaflow exchange
[Re: Bhigdog]
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Member
Registered: 05/20/08
Posts: 46
Loc: SoCal
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I'm thinking it is not worth getting as about it's good for is internal parts. He's asking $200 and it's susposed to have about 500 miles on the rebuild. It was replaced by a 350/350 drivetrain.
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Archie
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#524833 - 07/20/08 06:08 PM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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$ 200 doorstop???????????
_________________________
Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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#524840 - 07/20/08 06:38 PM
Re: Dynaflow exchange
[Re: Bhigdog]
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Member
Registered: 05/20/08
Posts: 46
Loc: SoCal
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I guess that eliminates all doubt. Thanks for the advice and info.
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Archie
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#524846 - 07/20/08 07:09 PM
Re: Dynaflow exchange
[Re: apb]
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Member
Registered: 10/23/01
Posts: 1709
Loc: Eastern PA
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Wish it would have been otherwise but it is what it is...........Bob
_________________________
Bob Beck
39 Chev PU
69 big block Corvette
55 Buick 66C
57 Buick 46C
55 Olds S-88
56 Chrysler St. Regis
AACA, BCA, WPC, USHGA
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