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Topic: Would an '83 A.O.D. have a lockup convertor ?? (Read 895 times) previous topic - next topic

Would an '83 A.O.D. have a lockup convertor ??

I got my 83 T-Bird Heritage running again and it has the original 5.0 AOD with a Baumann shift kit. The car has been converted to a carb with the lokar TV cable adjusted as per the factory spec.

The overdrive engages but as I am cruising along at 60-65 mph I notice (and hear) the rpms go up then down about 200-300 rpm.  I don't think the overdrive band is slipping because I would think if the o.d. was disengaging the rpms would be higher than 300 ?  The rise and fall of the rpms never went more than 300.

Did the 83's have some form of lockup convertor like the AODE ?
Alan Mackin--Semi Professional Ford der
83 T-Bird 460
83 T-Bird Heritage 5.0
84 T-Bird 5.0
86 T-Bird Turbo Coupe NHRA Stocker & Super Stocker
87 T-Bird Turbo Coupe
88 Bronco II Drag truck 302
95 Mustang GT auto
2004 F-350 CC Dually V-10

Would an '83 A.O.D. have a lockup convertor ??

Reply #1 –
From the factory all AODs have a lock up converter. The non lock up AODS have aftermarket parts in them to make them a non lock up trans.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Would an '83 A.O.D. have a lockup convertor ??

Reply #2 –
Quote from: thunderjet302;291656
From the factory all AODs have a lock up converter. The non lock up AODS have aftermarket parts in them to make them a non lock up trans.


I know the AODE use solonoids to activate the lockup convertor.
I wonder how the early AODs control the activation of the lockup feature ?
Alan Mackin--Semi Professional Ford der
83 T-Bird 460
83 T-Bird Heritage 5.0
84 T-Bird 5.0
86 T-Bird Turbo Coupe NHRA Stocker & Super Stocker
87 T-Bird Turbo Coupe
88 Bronco II Drag truck 302
95 Mustang GT auto
2004 F-350 CC Dually V-10

Would an '83 A.O.D. have a lockup convertor ??

Reply #3 –
AODs have 2 input shafts, one inside of the other:  one for 1st and 2nd gear (outer) and one for 3rd and 4th gear (inner). 3rd gear is semi locked up and 4th is fully locked. When you get to 3rd gear you are sending power through the smaller inner shaft. In 4th gear you are also sending power through the smaller input shaft but the converter is fully locked. The lock up function is in the converter. Most people break the smaller, weaker inner input shaft with high horse power or abuse. Many people go with non lock up AODs with high HP applications to prevent input shaft failure. They still have all 4 gears but use the stronger outer shaft for all of them. 3rd and 4th gear no longer lock up and slip just like 1st and 2nd.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.