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1965 Ford F250 3 speed O/D conversion

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01-23-2006 09:58:07

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I just recently purchased a one owner, 71,000 original mile 1965 Ford F250.
It has a 352 with a 3 speed column shift. I would like to find the optional 3 speed overdrive trans and setup to convert my truck.
Does anyone know what parts are needed and how the set it up (or where to find the parts)

Any help would be appreciated!!

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John R.

01-23-2006 17:07:27

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 Re: 1965 Ford F250 3 speed O/D conversion in reply to Joel , 01-23-2006 09:58:07  
Joel keep watching Ebay, they comeup every now and again. I have that engine with 3.00 rears behind a C6 auto and get 14 or so 70-75 mph in my 66. Adapters for AOD run over $600.00 so it's hard to justify.

If your truck is running out of breath it needs a lower rear ratio. I don't know where mine would top out at but it will use all of the numbers on the speedo with plenty to go.

happy hunting


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01-23-2006 11:10:55

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 Re: 1965 Ford F250 3 speed O/D conversion in reply to Joel , 01-23-2006 09:58:07  

Got to be a nice truck. First I don't know where to get the parts but would guess that they are rear. Now that engine liked as much gas at an idle as it did at 5000 rpm so being able to tell the benefit of the overdrive is going to be difficult.

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01-23-2006 11:54:30

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 Re: Re: 1965 Ford F250 3 speed O/D conversion in reply to buckva, 01-23-2006 11:10:55  
I really want to convert it to O/D mainly to make it better on the freeway. It tops out at about 60-65. It also would be nice to be able to run on the hiway at a lower rmp.

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Jon Hagen

01-23-2006 17:06:07

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 Re: Re: Re: 1965 Ford F250 3 speed O/D conversion in reply to joel, 01-23-2006 11:54:30  
I scrapped a pickup with that setup 15-20 years ago,You would need the trans and front drive shaft,as I seem to remember the OD trans is longer than a std 3 speed. The "kick down" system consists of a throttle linkage mounted switch and a cowl mounted control relay and wiring harness. If you find the od transmission without the control system,you can simply wire the od solenoid to a fused,dash mounted switch to turn it on/off,and drive it exactly like the two speed axle in a larger truck. Very simple and reliable,I have driven od conversions for years like that with good results. The only thing you must remember with this manual control system is that the od trans will not shift into reverse unless the od is shifted to low range.
You should also install a "lock out" cable,as the transmission will freewheel in low range unless you lock it out. Remember to always park the od equipped pickup in reverse or with the lockout cable pulled to prevent "freewheeling" into somthing if the pickup is parked down hill.

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