Turning a Borg Warner 35/40/42 cable into an AOD one

xctasy

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A little Aussie history on the use of the 1958 to 1991 Borg Warner US patent 35/40/42 and 51 transmissions. It has an AOD style down shift cable that can be repurposed as an AOD throttle valve cable (TV Cable)


In Australia, from 1964 to 1983, Ford used the old AMC Borg Warner 35 or 40 3 speed automatic transmission with a special downshift cable which is just like the AOD 4 stage automatic.

It was the Chrysler Corp Valiant 225 Slant and HEMI 215/245/265 or AMC 232/258/304/343 gearbox, and FoMoCo Australia decided to use it as a C4 replacement from Chrysler Australia when they closed down in 1980-1982 to become Mitsubishi Australia. The gearbox was used as a Model 51 until 1991 on 3.2 and 3.9 liter OHC sixes, and as a Model 40 on 1991 4.1 Liter OHV sixes.


The US C4 was withdrawn from the Oz options list in early 1982, last year of the Six Cylinder Cortina, Six Cylinder Transit Van and it was not an option on the Bronco or F100 4.1 liter six.

That C4 gearbox with the stock 2V Weber ADM 34 requires a special down shift cable,

The Weber ADM 34 carb doesn't have one that suits the C4, although we can make the BW 40 one work with reasonable ease.


The 1968 to 1982 C4 automatic has an iron bell-housing made in Australia for a US C4 gearbox with a 1650 302 Windsor V8 torque converter, called the C9 six cylinder bellhousing because it came out in the 1968 221 XW Falcon and Fairlane as an option, and then got revised in 1969 again.


AMC BW 35 system

232 Rambler 1-bbl RBS

69 Jav with 232 automatic

FROM "https://theamcforum.com/forum/throttle-change-68-232-javelin_topic38563.html"
throttle_04.jpg


''https://theamcforum.com/forum/uploads/6038/throttle_04.jpg"

When converting to 2bbl 2300 series Holley 350 or 500 cfm 2-bbl, you have to adapt the Down shift rod to a 1969-1971 V8 304/343 ONE

69_jAVELIN_232_SDC10007.jpg


When convering to a Weber 2-bbl from a 2300 Ford, it requires a whole nuther set of parts.

"https://theamcforum.com/forum/uploads/5660/Linkage_8x6.jpg"

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On my Cross flow 250 with Holley 4412 2300 series 500 cfm throtle body base, I used a 1970 VG Valiant 245 downshift cable

XE250XFLOWWITHIMPCOCA3002BBLADAPTOR.jpg


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For the Weber ADM 34 and Holley Weber 5200/62000/6500 and DGEV/DGES/DGAV 32/36 and 38's,

https://fordsix.com/viewtopic.php?t=80952

xctasy":pwaxt6dy said:
First, lets have a look at the parts on your Weber ADM 34.

It has an Electronic Coolant temperature sensor input. And a combined red wire circiut of A fuel flow sensor, an idle stop solenoid and an anti-dieseling solenoid.


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The back of the carb and intake have a passenger side accelerator cable designed for a Right Hand Drive car. And a kick-down /down shift cable bracket, which operates from the long lever on the primary Drivers sde Barrel of the 2bbl carb, just below the green electric choke.

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With a Fox 2.3 liter accelerator cable and bracket and part of a 2-bbl 5200/6200 2bbl carb, you can get your Ranchero accelerator working easily.



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The Holley Weber Drivers side primary linkage and the whole 1978-1982 Accelerator cable will get your ADM 34 working without having to convert anything.

That's your first problem solved. Having an Accelerator and kick-down cable that work without futzing around.
 
https://fordsix.com/viewtopic.php?f=3&t ... er#p629806

xctasy":1kcwupzz said:
I've got you covered for any thing you want to do. I've done it all to the X flow. Turbos, propane, carbs, anything.


For example,

Here is the 2 BBL CarterBDB /Autolite 2100/Motorcraft 2150 /Holley 2300 series 7448/4412 adapter for that carb on the cross flow.

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It's a mount for a Propane carb which I have used on all my six cylinder carb cars. I've been using the same type since 1996.


Just know we can do whatever you want, but if you go 2bbl Autolite 2100 1.08, you'll have to put a huge alloy spacer on the intake for it to fit. Then do the Chrysler/AMC down shift cable bracket.

So have a think about what you want to do.

Some more examples.

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I had to use an extended drive shaft to avoid my Impco Propane Carb and V6 Cologne 2-bbl Solex base plate.


I got so sick of the drama, I decided to make my own in line six carburation systems because FoMoCo made adopting anything else nearly impossible.
 
search here reveals:
https://fordsix.com/viewtopic.php?t=66332
all good info
(y)
Lota "pain" use.
But best is that "1 piece flat metal return spring post-kick dwn/throttle cables hold down."
("Hey bra, U said a mouth full!"). :eek:
 
Cheers


:beer:


xctasy":vz2rax7o said:
Its actually the Standard AMC and Non American I6 transmission. BW 35 was the stock auto gearbox for Rambler Americans since 1957, and it was used till the early 70's as a BW 40 or 42 on 304 AMC V8's. So it can be strong enough for a large 2 ton intermediate with 260 foot pounds. Or a 265 Hemi in a Chrysler Valiant. If its set up right, then its a responsive, light, efficient and really good economy transmission. Auto BW35's won 10 Benson and Hedges races in New Zealand from 1971-1981 behind 265 Chrysler Valliant's simply because the kickdown cable operation allows it to change gears faster than an FMX or C4

Issue that nearly every one has with an AOD and Borg Warner 35/40/42 and later 51 is that the kickdown cable is actually a cam operated throttle valve which has to have 1.75" of pullout , and must be adjusted to have 0.125" of slack at the carb or EFI throttle. If not, roll-out thump occurs, and you can rapidly turn your Borg Warner or Ford Automatic over drive into a Pile of Schizenhauser in a few weeks of driving
 
When using a BBD Cartyer 2-bbl on a 200 or 250 Ford, you have to copy Carter_BBD_2_barrell's method

http://vb.foureyedpride.com/showthread. ... ge-log-six

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The large log has a simple circle that can be routed out to fit a 2-bbl carb on a 1 bbl hole.

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Econoline":qmwvhn62 said:
Recently 63falcon4drwagon wrote:

"I just installed a China made $72.00 Carter BBD lowtop 285 cfm two barrel on my large log 1978 200 head.
Both the cable throttle and cable C4 kickdown cable are connected to the gas pedal under the dash.
I welded an arm on to the carb choke linkage to use my stock 1963 choke cable.
The Carter BBD has 1 1/4" throttle bores which are closely spaced making it an easier conversion than a Holley or Autolite.
The adapter I was made from 1" x4" x 6" aluminum.
The carb has to be turned at an angle which turned out great for my 1978 Fairmont cable throttle linkage modifications
I had to raise the carb higher to clear the valve cover so I made an 1/2" red oak carb spacer out of two pieces of 1/4" oak fiberglassed together.
These Chinese carbs don't come with an air cleaner hold down bracket. I had to make one.
I have the stock 1963 Falcon air cleaner modified to fit this carb.
The 1" aluminum is easy to drill and to cut with a router bit.
After drilling 3 pilot holes my tiny drill press would not cut a 1 3/4" hole saw so I used a heavy duty 1/2" hand drill.
The intake and adapter is hogged out so this adapter is not some silly funnel setup.

It seems to be all the carb or more than this stock engine needs. I was building the adapter for another engine I'm rebuilding but decided to try it on the engine already in my Falcon. I enlarged the intake after stuffing rags and grease in the log. I think the Sniper would work at an angle. The angled stud holes on the intake need to go between the outer carb mount holes when making a one piece adapter. This puts the carb at an angle. My cable throttle would not have been long enough if not angled.
273 ~ {1964 thru 1969} Carter BBD {1.437" Throttle Plates x 1.063" Venturi}.......... 275 CFM Rating
318 ~ {1968 and up} Carter BBD {1.437" Throttle Plates x 1.186 Venturi}............ 285 CFM Rating
383 ~ {1962 thru 1971} Carter BBD {1.563" Throttle Plates x 1.313" Venturi}.......... 365 CFM Rating"

bbdboltpattern197.png


I got that image to print at scale by enlarging it 116% in my printer dialog.

The maximum BBD bore opening is around 1 9/16" x 3" vs 1 11/16" x 3 9/16" for the 2300 and a pad size of 4" vs 5 1/8". It can flow more than most of us will ever need. Holley claims their Sniper version can support up to 350HP.

63falcon4drwagon mounted one directly to his head by shifting it inline with the bolt holes for the bore to fit in between them on the stock carb pad. I'd love to see some pictures of that set up showing the linkage and clearance to the valve cover. I'm fascinated by this carb b/c of it's footprint mostly but it has an interesting history and the fact that holley released the sniper bbd puts it right into the wheelhouse of what I want to do for my van.

Looking at the stock lrg log head this carb will mount onto the length of the stock carb pad along the log. I'm thinking mill it flat, bore it out and make a simple adapter to bolt it to the log with studs for the carb and never hardly get outside of the length of the stock mount on the log. It looks like it aligns best with the log if the outer edge of the bore aligns to the outer edge of the 1 3/4" bore on the log. Iow, aligning the bbd's inboard pad side to the long flat inboard edge of the stock carb pad. And that keeps it as far away from the valve cover as practical. The question is how high it needs to be to clear the valve cover and which orientation best suits it and the fuel lines and linkage.





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Thanks for the encouragement and kind comments. I saw I didn't have any pics with the carb on the head when I posted last night. I thought I had one, but anyway here's a couple with my custom gaskets and plywood carb hat adapter! ;) lol. I'm afraid it may be too high b/c the choke arm forces the air cleaner up considerably. 1/2 an inch or close to it anyway. That's with having already pulled off the choke pull-off bit on the other side. The sniper won't have that issue.

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An AOD linkage then copies the AMC232/258/304/343 or Valiant Hemi 215/245/265 system pictured above in the earlier posts
 
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