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Old Mar 7, 2003 | 03:25 PM
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4spd OD

was there ever a 4spd OD HD cast iron trans for the 78/79 ford trucks??
 
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Old Mar 7, 2003 | 05:31 PM
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4spd OD

Yes. The T170F Side Mounted OD tranny was cast iron tranny based on the old toploader. The T170FS SROD and the T170FT TOD were both similar boxes but were aluminum. Not all SMODs are HD boxes though. There are both car and truck versions, the car versions were significantly less robust. Moer info at www.4speeds.com/toploader.html and
http://www.motivegear.com/tech_info/...nny_guide.html

If you're not fixed on the iron case, you might want to look for a TOD box, IIRC they were all truck-strength boxes
 

Last edited by StrangeRanger; Mar 7, 2003 at 05:33 PM.
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Old Mar 7, 2003 | 05:40 PM
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4spd OD

its a 3spd OD. not a 4spd OD.I see it as a 4 spd OD has 5 speeds. yes/no
 

Last edited by tbolt 460; Mar 7, 2003 at 05:44 PM.
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Old Mar 7, 2003 | 06:08 PM
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4spd OD

These three trannies are all 4 speeds, 3 plus OD. What exactly are you trying to find.
 
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Old Mar 7, 2003 | 06:20 PM
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4spd OD

some one telling me they have a 4spd OD for a 78 pickup for sale
 
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Old Mar 7, 2003 | 06:35 PM
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4spd OD

And the T170F is a cast-iron 4 speed OD tranny used in 78 pickups.
 
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Old Mar 8, 2003 | 09:01 AM
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4spd OD

so its got 5 speeds
 
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Old Mar 8, 2003 | 10:03 AM
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4spd OD

No, 4 only.
 
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Old Mar 8, 2003 | 12:02 PM
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4spd OD

Overdrive on these trannies is nothing special . It's not an external add-on. It's simply that 4th gear is an indirect drive with a ratio of less than 1:1.
 
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