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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

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Old Nov 15, 2007 | 01:22 AM
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launchba
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Question Tranny questions

Have a 66 F-100 with a 300-I6 that will be pushing 190+ horses. Will the 3 speed and overdrive hold-up?? What about converting to a 86 AOD automatic overdrive trans? Is this possible? What has to be done to make it work?? Thanks Bob
 
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Old Nov 15, 2007 | 03:15 AM
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NumberDummy
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Originally Posted by launchba
Have a 66 F-100 with a 300-I6 that will be pushing 190+ horses. Will the 3 speed and overdrive hold-up??
What about converting to a 86 AOD automatic overdrive trans? NO!, don't do that!! Is this possible? What has to be done to make it work?? Thanks Bob
You have the Warner T-85 overdrive? That is a VERY desirable transmission, so if you get rid of it...lemme know. The Warner trans is strong, and will get you better mileage than the POS AOD, which was a turd of an automatic from day one.

Dunno what HP my 65 F100 has now, because I built the original 352 into a 390, adding an RV cam and a 4V. The Warner Overdrive, has held up for 42 years-186,000 miles, with only new bearings, seals and the 2/3 syncro blocker rings replaced.
 

Last edited by NumberDummy; Nov 15, 2007 at 03:21 AM.
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Old Nov 15, 2007 | 02:36 PM
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RaleighDad66
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The conversion to the AOD is possible but there are some modifications which need to be done. I did this myself over a 5-day period and the overall cost was about $1k including transmission, shifter, driveshaft cut, torque converter, kickdown (TV) cable, flexplate, and assorted bolts. My goal was to go from 3-spd manual to auto overdrive. I only suggest you really consider what your goal is before you jump into this task.
 
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