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Single Rail Overdrive 4x4 Manual Transmission


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I'm swapping out my Single Rail Overdrive (SROD) 4x4 transmission and selling it. I can verify that gears 1-3 work fine, I'm not sure about 4th because I never got the truck going fast enough to use it. It either has 67k miles or 167k miles, but I'm thinking it's 67k. I am asking $200, which is totally negotiable.

IMG_9728.jpeg.a90f8ee4fd595ae4cb05d729d6d7b67b.jpeg

If you are interested, but don't know about the SROD: it is a full-synchro, aluminum-case, 3 speed plus overdrive. It uses a mechanical clutch. Part of the RUG-series of transmissions built by Ford. It's not for performance and it probably doesn't like towing. It will bolt up to an NP208 transfer case, the common manual transmission crossmember, and the common Ford bellhousings. I measured it, and it's the same length as a Borg Warner T19 + adapter.

It's either one of these two gear ratios:

Ratio #1: 3.01 1st, 1.78 2nd, 1.00 3rd, 0.79 4th and 3.01 Rev.

Ratio #2: 3.25 1st, 1.92 2nd, 1.00 3rd, 0.78 4th and 3.25 Rev.

I can find out later on which one it is.

Parts included:

-SROD transmission

-4x4 adapter/shifter housing

-Shifter assembly with knob

-NP208 shifter assembly with knob

-Floorboard cover

-Shifter boots

Basically all the parts you need for a conversion, but I cannot include the bellhousing, I need it.

Available for pickup in the Sacramento, CA area. I'm willing to drive a little ways if needed. Sometimes I take road trips into neighboring states as well. If you want it shipped, we can figure something out.

 

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I think the SROD's were fairly rare in a 4x4 weren't they? Very interesting trans, and I'm a big fan of anything with OD, so if I had a project for it, I'd install one of these in a heartbeat. Correct me if I'm wrong, but it is the SROD that places the 4x4 shifter to the right of the transmission shifter doesn't it? It's unique, in that the shifters are almost side by side, and on the opposite sides of each other than typical.

Good luck with the sale. The way gas prices are going, transmissions with OD will only gain in popularity going forward imho.

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Mark! Old home week! First we have Paul/Rogue_Wulff chiming in, and now you. :nabble_anim_claps:

I'm always around, Gary!

As the site has grown, the expertise of the group has come to the point I learn more by hanging back and trying to absorb it all.

My little sad ox just made the trip to Missoula and back last month bringing more empty wine barrels to my brother for cider. With the weight she was sure-footed in the compact snow. It was a proud moment tempered with the crazy amount spent on gas. I could have used an OD. One might say I paid for the privilege of bragging rights.

My only mishaps were a flat outside Jerome ID and someone trying to rip the rear plate off while at dinner at my favorite midway stop in Arco. The flat was an easy repair, but I was glad for that tire - sized circle of marine plywood I stow under the spare for a dry spot to work.

Lots of fun conversations at each gas stop. I felt a little bad exposing her to the magnesium chloride, although the MDT says they also use corrosion inhibitors.

Stay warm out your way.

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I'm always around, Gary!

As the site has grown, the expertise of the group has come to the point I learn more by hanging back and trying to absorb it all.

My little sad ox just made the trip to Missoula and back last month bringing more empty wine barrels to my brother for cider. With the weight she was sure-footed in the compact snow. It was a proud moment tempered with the crazy amount spent on gas. I could have used an OD. One might say I paid for the privilege of bragging rights.

My only mishaps were a flat outside Jerome ID and someone trying to rip the rear plate off while at dinner at my favorite midway stop in Arco. The flat was an easy repair, but I was glad for that tire - sized circle of marine plywood I stow under the spare for a dry spot to work.

Lots of fun conversations at each gas stop. I felt a little bad exposing her to the magnesium chloride, although the MDT says they also use corrosion inhibitors.

Stay warm out your way.

I'm glad you are "always around". But yes, the expertise of the group has really grown so I, too, learn by reading.

So, now I understand the interest in the SROD tranny. Yes, an overdrive can definitely make a difference - both in MPG as well as a relaxed feel while on the highway.

A flat on one of these trucks is no fun, especially if the spare is below the bed. But glad you had the right equipment. However, someone tried to rip the rear plate off? And didn't get the job done? Glad they didn't get it, but hope they didn't do much damage.

As for the warmth, it has come back. At 6:00 AM it is 37F, which is much higher than the highs a few days ago when we weren't getting over 20F. But compared to last year we aren't doing too badly.

I guess you've seen that I'm installing that EFI harness you got me a few years ago? I sure am thankful for it. :nabble_anim_claps:

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I'm glad you are "always around". But yes, the expertise of the group has really grown so I, too, learn by reading.

So, now I understand the interest in the SROD tranny. Yes, an overdrive can definitely make a difference - both in MPG as well as a relaxed feel while on the highway.

A flat on one of these trucks is no fun, especially if the spare is below the bed. But glad you had the right equipment. However, someone tried to rip the rear plate off? And didn't get the job done? Glad they didn't get it, but hope they didn't do much damage.

As for the warmth, it has come back. At 6:00 AM it is 37F, which is much higher than the highs a few days ago when we weren't getting over 20F. But compared to last year we aren't doing too badly.

I guess you've seen that I'm installing that EFI harness you got me a few years ago? I sure am thankful for it. :nabble_anim_claps:

A pretty cool conclusion to that chapter. One more onion layer peeled with less tears at the end!

I've been keeping records on where all the parts on my truck come from-through members and ebay and Craigslist. Someday I'll make my own map.

In the meantime you have a little bit of NorCal in yours.

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I think the SROD's were fairly rare in a 4x4 weren't they? Very interesting trans, and I'm a big fan of anything with OD, so if I had a project for it, I'd install one of these in a heartbeat. Correct me if I'm wrong, but it is the SROD that places the 4x4 shifter to the right of the transmission shifter doesn't it? It's unique, in that the shifters are almost side by side, and on the opposite sides of each other than typical.

Yes pretty rare, I've only seen a picture of one once when I was doing my T19 swap research. Even then the 2WD ones don't seem to be very common based on the limited discussions on Foxbody Mustang forums. All of this looking around led me to the conclusion that it's not the transmission I want. Shifters are in opposite positions from normal like you said, which is why I'm including the special transfer case shifter and linkage that puts it on the passenger side.

That is very interesting...

... and close

If you're in Sonoma I'm actually closer than you think: in Winters. I will warn you that as far as I know, this transmission in all forms only sat behind 300s in trucks and up to 302s in Mustangs. Parts probably aren't easy to come by either. If you're just genuinely curious maybe you could swing by and look at it. I just pressure washed it yesterday and removed the bellhousing.

B6F0700F-62AD-437F-AAE4-4544971D8174.jpeg.f301e0e50a795ad77b787f52cc245d19.jpeg

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I think the SROD's were fairly rare in a 4x4 weren't they? Very interesting trans, and I'm a big fan of anything with OD, so if I had a project for it, I'd install one of these in a heartbeat. Correct me if I'm wrong, but it is the SROD that places the 4x4 shifter to the right of the transmission shifter doesn't it? It's unique, in that the shifters are almost side by side, and on the opposite sides of each other than typical.

Yes pretty rare, I've only seen a picture of one once when I was doing my T19 swap research. Even then the 2WD ones don't seem to be very common based on the limited discussions on Foxbody Mustang forums. All of this looking around led me to the conclusion that it's not the transmission I want. Shifters are in opposite positions from normal like you said, which is why I'm including the special transfer case shifter and linkage that puts it on the passenger side.

That is very interesting...

... and close

If you're in Sonoma I'm actually closer than you think: in Winters. I will warn you that as far as I know, this transmission in all forms only sat behind 300s in trucks and up to 302s in Mustangs. Parts probably aren't easy to come by either. If you're just genuinely curious maybe you could swing by and look at it. I just pressure washed it yesterday and removed the bellhousing.

We had a member on here named Ray Cecil that had an '82 Flareside 4x4 with that SROD trans it in.

https://forum.garysgaragemahal.com/Little-Blue-82-tp25913.html

He left the forum a while ago, and has since sold that truck, but I did see it pop up somewhere again recently. Was the new owner on here Gary? I did see pics of it posted somewhere and the new owner saying it was ray's old truck...I just can't remember where I saw that. It was either on here or on FB.

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We had a member on here named Ray Cecil that had an '82 Flareside 4x4 with that SROD trans it in.

https://forum.garysgaragemahal.com/Little-Blue-82-tp25913.html

He left the forum a while ago, and has since sold that truck, but I did see it pop up somewhere again recently. Was the new owner on here Gary? I did see pics of it posted somewhere and the new owner saying it was ray's old truck...I just can't remember where I saw that. It was either on here or on FB.

I don't remember, Cory. Sorry.

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