torque coverter
first time post. i need to find out how to tell what torque converter i have and what torque converter i need. i have a AOD trany in a 90 f150. 4x4. im getting ready to put a transmission in it from a 85. not sure what torque converter it has. not sure if it matters, but it is lifted 8 inchs. 35 13.50 tires. and some engine mods. so does it matter?
Last edited by shf74; Mar 11, 2008 at 02:31 PM. Reason: spelling
Not well-versed on tranny specifics, but suggest you're going to want the torque converter that matches to the tranny you're wanting to install. Not sure when the first year of AODs came out or what the interchangability is.
Give it a little time - the guys that know for sure should be along sometime this evening.
Give it a little time - the guys that know for sure should be along sometime this evening.
If memory serves there are 3 different AOD converters. The splines all interchange, but stall speeds are different. Look at the impller (the trans side), there will be bulges where the blades attach inside. They either go slightly counterclockwise, almost straight or clockwise. Best bet is to make sure they go the same way. The straight big gas engines and clockwise smaller gas engines. The clockwise being only slightly higher stall than the staight.
It also seems like AOD may have had 2 different diameter converters, so measure the outside diameter to be sure.
Depending on your mods you may want to condsider a higher stall (aftermarket) converter. If it has a bigger cam it will allow the engine into it power band much better.
If swapping transmissions, I assume you are getting from another truck. The AOD is hydraulically calibrated and there are many different calibrations. Your shift timing may not be what you are expecting.
Make sure you follow the manual on setting TV pressure. You can easily smoke the trans if the pressure is set to low.
It also seems like AOD may have had 2 different diameter converters, so measure the outside diameter to be sure.
Depending on your mods you may want to condsider a higher stall (aftermarket) converter. If it has a bigger cam it will allow the engine into it power band much better.
If swapping transmissions, I assume you are getting from another truck. The AOD is hydraulically calibrated and there are many different calibrations. Your shift timing may not be what you are expecting.
Make sure you follow the manual on setting TV pressure. You can easily smoke the trans if the pressure is set to low.
Last edited by heeke; Mar 12, 2008 at 09:21 PM.



