Transmission / Overdrive: Flightomatic

[Cus63]

Hello All,
Finally got my Fightomatic back in the 61 Hawk, car is running & changing well. The trans is quite noisy when under load, like a rushing/sucking sound, could be quite normal,
sounds like the torque converter, just checking!

regards, Cus

[StudeRich]

Not normal, did they rebuild the Torque Converter?
Probably kind of a Sloshing Sound right, like a Bad Stator in the Converter?

Does the throttle Pressure seem correct; i.e. the Shift Points seem at a Normal speed and Firmness?
And WAS the throttle Pressure Set up after Install?

[Cus63]

Hello Rich,
TC was split & re-built, changes seem OK, but on normal level ground take off, jumps from 2-3 pretty quickly, & takes a bit to get it to kick down from 3-2.
It's hard to explain the sound, more like a hissing/rushing sound.

[Dwain G.]

I definitely remember hearing that 'hissing' noise in 1956 cars, but not in any others.

[Cus63]

Hello Dwain,
Was just reading an old post of yours.

08-19-2008, 10:00 PM
The transmission could be a little low on fluid. It isn't a 'gurgling' noise coming from the heater/defroster is it?
It could be a normal sound too. From the manual....the rushing or swishing sound from the torque converter when accelerating rapidly in drive intermediate which is a normal noise due to the vortex flow in the converter under heavy load.


Dwain G

[StudeRich]

Hello Rich,
TC was split & re-built, changes seem OK, but on normal level ground take off, jumps from 2-3 pretty quickly, & takes a bit to get it to kick down from 3-2.
It's hard to explain the sound, more like a hissing/rushing sound.

Ok, THIS is a definite clue that the Throttle Pressure Adjustment I asked about, was not done or not done correctly, because you have LOW Pressure.

MUCH more important to worry about, than the Converter Noise.

[Cus63]

Ok, throttle pressure definitely not set properly, I set the throttle to bell crank arm to have the correct gap 17/64 between the pads, & re-set the idle etc.,
from a standing start, if I tramp it goes from 2-3rd at about 40mph ( & a nice change), but either it's not dropping to 1st or it's a very smooth change from 1st - 2nd ?
Can't seem to feel the 2 changes to get to third with a full throttle start on flat ground.
I haven't altered the linkage from the bell crank to the trans yet, measurement is 13.9 inches.

regards, Cus

[64studeavanti]

Flightomatic V8 transmissions normally start in 2nd gear.

[Cus63]

Flightomatic V8 transmissions normally start in 2nd gear.

Yeah, I realise that, but I have mentioned above that I flattened it to start, should drop to first with a full throttle start? Also, wondering at what speed in 3rd if pedal pushed down, should it kick back to 2nd on a flat road.