4 speed toploader, shift tower conversion w/ D20 adapter fee
- Kinder
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4 speed toploader, shift tower conversion w/ D20 adapter fee
IΓÇÖm getting ready to pull this out of Gunni, itΓÇÖs a working trans that runs all the gears. ItΓÇÖs been converted to a top shift (w/ a shift tower from a T-17/18 trans if my memory is correct), and is essentially a bolt in affair after you cut a hole for the shifter to come through the trans tunnel. YouΓÇÖll likely need to modify the driveshafts also, depending on how much further back it puts the D20, in Gunni itΓÇÖs about an inch. It was originally in TFB when we pulled it out of the junk yard bolted to a 351w.
If you do a search online or on CB.com youΓÇÖll see quite a few opinions on this trans/conversion. So IΓÇÖll give you some 1st hand opinions from actually driving Gunni w/ this trans for almost 2 yrs now, keep in mind itΓÇÖs currently bolted to a 6 cylinder 170.
First off I love it, and if I wasnΓÇÖt slowly getting Gunni back to itΓÇÖs near factory state IΓÇÖd leave it bolted in as itΓÇÖs a blast to drive. Yes the 1st gear is a little low for a Bronco, but not too low for a street rig. You can off road this trans, but w/ a 170 I just put the xfer case in low and went about having fun. Of course I do have 4.10s in Gunni, but I can still do 60+ mph on the hi-way. The shifter comes up in a good spot and I wouldnΓÇÖt change its position.
The bad. I have no idea what the mileage is on this trans, the synchros still work, and I do run the correct old school oil in it.
If needed I have a V8 bell housing & clutch fork to go along with this. IΓÇÖll get some pic posted of it installed in Gunni & I may have an old pic of it uninstalled also. IΓÇÖm not sure about the price yet, old threads on CB.com have side shift toploaders priced from $300-$1000, of course some are rebuilt for that price.
Let me know if there is any interest or if there are questions I can try to answer.
If you do a search online or on CB.com youΓÇÖll see quite a few opinions on this trans/conversion. So IΓÇÖll give you some 1st hand opinions from actually driving Gunni w/ this trans for almost 2 yrs now, keep in mind itΓÇÖs currently bolted to a 6 cylinder 170.
First off I love it, and if I wasnΓÇÖt slowly getting Gunni back to itΓÇÖs near factory state IΓÇÖd leave it bolted in as itΓÇÖs a blast to drive. Yes the 1st gear is a little low for a Bronco, but not too low for a street rig. You can off road this trans, but w/ a 170 I just put the xfer case in low and went about having fun. Of course I do have 4.10s in Gunni, but I can still do 60+ mph on the hi-way. The shifter comes up in a good spot and I wouldnΓÇÖt change its position.
The bad. I have no idea what the mileage is on this trans, the synchros still work, and I do run the correct old school oil in it.
If needed I have a V8 bell housing & clutch fork to go along with this. IΓÇÖll get some pic posted of it installed in Gunni & I may have an old pic of it uninstalled also. IΓÇÖm not sure about the price yet, old threads on CB.com have side shift toploaders priced from $300-$1000, of course some are rebuilt for that price.
Let me know if there is any interest or if there are questions I can try to answer.
Best to Date MPG: 26.6
- Gunnibronco
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Just curious, this sounds like it was added to Gunni? not the trans in it when I sold it to you?
Was that one a NP435? I forget if you posted up what it was.
I'm interested in how she'll drive with the old 3 speed.
Was that one a NP435? I forget if you posted up what it was.
I'm interested in how she'll drive with the old 3 speed.
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
- Kinder
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Yep, it had the NP435 in it when I bought it, not my favorite transmission w/ the 170. First gear is too low to start out in & the 170 couldnΓÇÖt pull the 2nd gear from a stand still. So out it came & I had this toploader on the shelf for over 5 years collecting dust. It shifts super easy (not truck like) and the ratios were much friendlier for town driving.Gunnibronco wrote:Just curious, this sounds like it was added to Gunni? not the trans in it when I sold it to you?
Was that one a NP435? I forget if you posted up what it was.
I'm interested in how she'll drive with the old 3 speed.
IΓÇÖm also looking forward to getting the 3 spd back in (the correct ΓÇÿ66 trans that you sourced for it) and putting the column shift back together for the ΓÇ£3 on the tree.ΓÇ¥ I found a spare 3 spd column that IΓÇÖll need to scavenge parts from as the one in Gunni has been hacked up and the shift rod tabs are missing.
Best to Date MPG: 26.6
- Gunnibronco
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Kinder wrote:So out it came & I had this toploader on the shelf for over 5 years collecting dust. It shifts super easy (not truck like) and the ratios were much friendlier for town driving.
Can it be converted to a 2wd easily? My inner lunatic is interested in putting it behind one of the 3 (yes 3) early 331 hemi motors I've accumulated.
Or maybe I need to find a 4x4 application that 'needs' an early hemi.
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
- TOOLMAN
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Back when I first bought my Bronco (like KbarS days), the toploader was the transmission upgrade to do. I could never find one...or really afford it!
Wilma - 71 1/2 Wagon; 3 1/2" WH lift, 1" BL, NP435, Chebby disc front, WH twin stick D20, EFI 302, Cool hood scoop, mucho cancer; purchased in 1990.
- Gunnibronco
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Sounds like a great trans for a daily driver with little or no trail/off road needs.
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
- TOOLMAN
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
I think it's a pretty durable transmission. KbarS used to put those behind 400hp 289's if I remember correctly. Waayyy more durable than the 3-speed.
Wilma - 71 1/2 Wagon; 3 1/2" WH lift, 1" BL, NP435, Chebby disc front, WH twin stick D20, EFI 302, Cool hood scoop, mucho cancer; purchased in 1990.
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Flatheadpopup
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Curious if you still have this and if you know what the gear ratios in the transmission are? It looks like there are at least several versions out there. Anyways, I might just be interested if the price is right. Thanks,
Tony
Tony
67 Bronco in progress 2.5 lift, 351w, toploader, 4.11s and 33's
65 Mustang...also in progress.
65 Mustang...also in progress.
- Kinder
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
Yes, I still have it, it's still in the '66.
It should be the wide ratio trans, I'll pull the numbers from it and confirm.
1st 2nd 3rd 4th
2.78 1.93 1.36 1.00
It should be the wide ratio trans, I'll pull the numbers from it and confirm.
1st 2nd 3rd 4th
2.78 1.93 1.36 1.00
Best to Date MPG: 26.6
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Flatheadpopup
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
OK, thanks for the info. Let me know if you decide to sell it and how much. Thanks again.
Tony
Tony
67 Bronco in progress 2.5 lift, 351w, toploader, 4.11s and 33's
65 Mustang...also in progress.
65 Mustang...also in progress.
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Flatheadpopup
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Re: 4 speed toploader, shift tower conversion w/ D20 adapter
I should have mentioned yesterday that I'm not too worried about the gear ratios--just not looking for anything collectible (i.e. expensive) like the close ratio tranny. I had a
idea that this transmission--along with a T-176 gear set swapped in would make for a nifty setup. It would end up with a 3.52 or 3.80 1st gear and the 1:1 4th gear would act as overdrive since I still have 3.50's. I might be
but I think my idea would work...
idea that this transmission--along with a T-176 gear set swapped in would make for a nifty setup. It would end up with a 3.52 or 3.80 1st gear and the 1:1 4th gear would act as overdrive since I still have 3.50's. I might be
but I think my idea would work...67 Bronco in progress 2.5 lift, 351w, toploader, 4.11s and 33's
65 Mustang...also in progress.
65 Mustang...also in progress.
- Kinder
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4 speed toploader, shift tower conversion w/ D20 adapter fee
Great idea, the trans isnΓÇÖt rare, the tower based shifter that converts it is the rare piece, that and the already modified D20 adapter. IΓÇÖm definitely going to sell it as soon as I pull it out, IΓÇÖll msg you with a price.
Best to Date MPG: 26.6
- Kinder
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