I'm new to the Buick world, and my car hasn't arrived yet. The photo shows a two-speed transmission in the dash indicator. Is this a Powerglide?
I'd say that is a Dynaflow. https://en.wikipedia.org/wiki/Dynaflow https://en.wikipedia.org/wiki/Buick_LeSabre Looks like the 2 speed ST300 debuted in 1964.
NO, it's what's known as a "DynaFlow". A Buick ONLY trans. It has an "R" reverse that's a gear. An "L" low that's a gear. AND a "D" that's ONLY a fluid coupling. The only thing connecting the engine with the wheels is fluid AND there is NO SHIFTING of gears. That's the reason it's SO SMOOTH as there are no gears to shift. '63 is the last year for the "DynaFlow" & the best/ most improved of the original design that was offered starting in 1948. COMPLETELY misunderstood & unique. A very simple design & trans. Tom T.
Thanks, Tom, great explanation. I'm building the car as a cruiser, and the plans are for it to see some highway miles. Should I stick with the Dynaflow or swap to a 200R4? In reading Wikipedia it sounds like the Dynaflow is very inefficient.
Around town is not too good. On the highway cruising it's not bad. On my '61 Lesabre I can get 20+ depending on my right foot.