dyna flow help , question

i have been told that the 263 out of a 51 is the same as the 263 in my 53 so i bought one the crank seems to not match up its not the same size ?
eng and ****** wont sit flush .
is there somthing im missing mabe an insert that will have to be removed or swap out the torque converter ?
thanks
BiGVic

 

bump anybuick guy's on board ?

 

I'm not a buick guy but did the engine you bought have a standard ****** behind it? If it did and its like any other engine i've messed with there will be a pilot bushing in the end of the crank that will have to be removed before you can install it in front of a auto ******

 

I'm not an expert, but I remember there is a difference in the crankshaft between the standard and automatic transmissions back then. Frank

 

thanks there both auto trans
hitting it in the morning gona get it in there some how !

 

back up got it in switched a few parts but now the car seems like its taking off in second gear manualy shifting it s good ?
anyone ever have this problem

 

ant buick guy's on line ? need some info on the dyna flow .

 

If I remember correctly, Dynaflows don't shift; Drive is a single gear - you can start it in Low, but it was not the way it was designed. The engine rpm's should be high when starting out, almost like a slipping clutch, then the car, engine and transmission will catch up with each other about 25 mph. Don't expect any neck-snapping acceleration.

 

Sounds like it's working like it was designed to.

The Dynaflow initially used a five-element torque converter, with two turbines and two stators, as well as a planetary ge****t that provided two forward speeds plus reverse. In normal driving, Dynaflow started in high gear (direct drive), relying on the converter's torque multiplication to accelerate the vehicle. Low gear, obtained via the planetary ge****t, could be manually engaged and held up to approximately 40 mph , improving acceleration. However, the transmission was incapable of automatic shifting, requiring the driver to move the shift lever from low to drive to cause an upshift. Buicks equipped with the Dynaflow transmissions were unique a**** American automobiles of the time in that the driver or his/her p***engers would not detect the tell-tale interruption in acceleration that resulted when other automatic transmissions of the time shifted through their gears. Acceleration through a Dynaflow was one smooth (if inefficient) experience

 

Now you know why they're known as Dynaflush!

 

thanks interesting

 

Not trying to scare you, but the '51 Special hardtop I used to have (Dynaflow equipped) wouldn't even pull 10 mpg. Those were the days when there was a significant difference in fuel economy between a slush pump and a stick. That was the determining factor in my selling it--if I was going to drive something that got single digit fuel mileage, it was going to have to be a lot more fun to drive than a '51 Buick. It made my '64 GTO tripower four speed car look like a gas miser!