buicknut
Haven't done anything on my '47 Super yet but am getting quite confused.  The Seventy Years of Buick book I have, states that the Dynaflow did not come out until 1948 and then only as an option on the Roadmasters.  But my '47 appears to have the dynaflow.  Is the book wrong or what??  Can's get underneath very well to look at the tranny, but the shifting lever has only an up/down configuration, not the usual "H" pattern on a standard gear tranny.  There is no labeling or indicator stating drive or reverse. Can anyone straighten out a very confused person at this point?  Trying to interchange a '47 engine with a '48 engine with dynaflow.  The '48 engine also seems to be from a Super by the engine number which also disproves what is written in the Seventy Years book which states it was only available as on option on the Roadmaster.
Can you help??
Lee
satchreed
Design of the Buick Dyna-flow transmission was completed in time for the 1947 model year but GM decided it needed more testing. It was added as an option on Roadmasters in 1948. They were standard on Roadmasters in 1949 and available as options in 1949 Supers. It became an option on 1950 Specials as well.
tjbian
Have you verified the engine number to see if your engine was switched???

1947 Continued 1946 numbers that started with 45580375
1948 First number 49998815
1949 First number 52209725  

The final digit 5 indicates 50 series.

My 1948 Motor Age Flat Rate Manual and 1955 Motors Auto Repair Manual give the same info for DynaSlow only being available in 48 Roadmaster. Is shows on Super in 1949. 
buicknut
I am sorry for being (not ashamed to say it) screwed up.  Mine is a '47 with standard trans. Thought it was otherwise, when I couldn't get the H sequence, only up and down. But sitting for so long it was just stubborn. Also made another error. The engine # for the one for sale locally, is for a '49 Super with Dynaflow which was an option in '49, not a '48. So everything now makes a little more sense. Thanks for your reply.
Lee
tjbian
The Dynaflow engine crankshaft will not accept a standard transmission flywheel. You cannot install the Dynaflow engine in your car. I suppose if you had the complete Dynaslow car you could change engine, transmission, radiator and lines, pedals, steering column etc. but who would want to?
buicknut
Well that's the kind of definite answer I needed.  Guess this engine is something to forget about.
Lee

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