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AX15 in a Bronco with a I6

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jimmyv65
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AX15 in a Bronco with a I6

Post #1 by jimmyv65 » Fri Oct 26, 2018 12:46 pm

I am in process on swapping from the 3 speed to an AX15. I am most of the way through it and have started to see some lessons learned to pass along.

    Advance Adapter(AA) Adapters: The adapter plate at the front and to the transfer case work fine. This assumes you have a big bell 200 or a 250. You need the V-8 butterfly bolt pattern on the bell housing.
    Clutch The clutch is a messy purchase. You need a Chevy 11" pressure plate and a Ford Clutch kit where you'll throw out the pressure plate. The Chevy plate is needed to get the right spline count. The right plate is sold on the AA website.
    Length AA advertises that this swap doesn't change the trans/transfer total length. That may be true for the V8 but not for us I6er's. The factory transfer case adapter for the I6 is a different length. So, you will need to get your driveshafts adjusted. The new AX15 is 4.5" longer.
    Trans/Transfer Mount The Advance Adpater plate won't work. With the length difference, nothing lines up. I am in process on building my own. I will post some pictures when I am done.
    Exhaust Your set up may be different than mine, we ran my exhaust over the top of the factory trans/transfer mount. With the new set up, I am going to need to adjust the exhaust. The AX15 is wider and I need to lower the exhaust
    Stabbing it Home Stabbing that trans back in is a b*tch! I suppose it is on any vehicle, but with the transfer case on the back, it is real interesting. Plan for blood and cussing

Has anyone else on this site done this swap? I think this info applies to the NV3500 swap. I think that is the same kit.
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

bmbm40
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Re: AX15 in a Bronco with a I6

Post #2 by bmbm40 » Fri Oct 26, 2018 4:54 pm

I remember that. The AA kit is easier with a v8 but with a six the Clutch/Driveshaft length/Trans mount were a challenge. AA fixed me up with the clutch parts right away and the trans mount got modified. And of course the drive lines got worked on.
But what a great improvement!
Was the M50D ever a consideration for you?
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 1.08 on D8 head, power brakes, rear limited slip, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

jimmyv65
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Re: AX15 in a Bronco with a I6

Post #3 by jimmyv65 » Fri Oct 26, 2018 5:57 pm

bmbm40 wrote: Was the M50D ever a consideration for you?


I've heard good things on it. I liked the gearing a little better on the AX15 and I wanted a divorced bellhousing. I wanted the option to stay with a manual clutch vs. hydro. I wasn't sure on that with the M50D.
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

bmbm40
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Re: AX15 in a Bronco with a I6

Post #4 by bmbm40 » Thu Nov 01, 2018 8:48 pm

Yes those are valid considerations. After my NV3550 was all in I started adding up what it cost and it was kind of expensive. The fact that the M50 did not require the adapter to the block was attractive to me after the fact as I could have saved money on that part.
You will enjoy that five speed driving!
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 1.08 on D8 head, power brakes, rear limited slip, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

jimmyv65
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Posts: 96
Joined: Sun Aug 26, 2012 4:29 pm

Re: AX15 in a Bronco with a I6

Post #5 by jimmyv65 » Fri Nov 02, 2018 8:10 am

bmbm40 wrote:Yes those are valid considerations. After my NV3550 was all in I started adding up what it cost and it was kind of expensive. The fact that the M50 did not require the adapter to the block was attractive to me after the fact as I could have saved money on that part.
You will enjoy that five speed driving!


Yeah, I am excited to give 5 speed motoring a try. I am out of town for a bit, so the project is on hold until later this month.
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

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chad
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Location: Lawrence Swamp, S. Amherst, MA

AX15 in a Bronco with a I6 v NV3550

Post #6 by chad » Sun Jan 13, 2019 11:34 pm

"...Clutch: The clutch is a messy purchase. You need a Chevy 11" pressure plate and a Ford Clutch kit where you'll throw out the pressure plate. The Chevy plate is needed to get the right spline count. The right plate is sold on the AA website...."
used the dodge on my NV (due to cost) as it had the right spline. It wuz an 11 inch or something (bout an inch stuck out when mocking up).
Mounted it on the drill press (simply a turn table on a center), took a grinder'n trimmed the excess clutch off to fit as it spun slowly around (press was more for a 'center' rather than a 'spinner"). Not chewed up fits fine...

NV3550 replaced the Ax15 & is a lill lower 4 v 3.83. Here's a reference:

https://www.novak-adapt.com/knowledge/t ... al/nv3550/

https://www.novak-adapt.com/knowledge/t ... nual/ax15/

There R 2 Ax15s (earlier/later) & R still under production. Aisin(Warner) is almost as big as ZF in the tranny world & this model is claimed by some to B the best 5 speed ever put ina heep. Here's a lill chat (in typical Pirate fashion) abt a built ax15 which I have heard abt but can't find anywhere (so I went NV).

https://www.pirate4x4.com/forum/general ... -ax15.html

My next (if ever) will B the ZF (didn't wanna go hydraulic) as it has 2 PTOs (L & R) & that crawl 1st...
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

jimmyv65
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Posts: 96
Joined: Sun Aug 26, 2012 4:29 pm

Re: AX15 in a Bronco with a I6

Post #7 by jimmyv65 » Thu Apr 25, 2019 3:11 pm

I wanted to add some pictures of the cross member I built. In designing it, I had a few goals:
    -use existing mounting points
    -build it out of square tube
    -have it be a mount point for a future skid plate(so I let it get a little low near the bottom of the trans)
    -I wanted it to be 2 piece for easy removal

It gave me good clearance for running exhaust. I am sure there was plenty of other ways to design it, but this worked for me.

Image
Image
Image
Image
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

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chad
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Location: Lawrence Swamp, S. Amherst, MA

AX15 in a Bronco with an I6

Post #8 by chad » Thu Apr 25, 2019 7:40 pm

hard 2 C - but "I get it". Thanks so much for ur continued contact, pic, and general membership here!

I guess the 2 tranny bolts R now the lowest point in this rig? (bell is now higher?)

Y the Ax15?

Were suspension bushings used 4 the 3 rubber mount points?

Keep Doin It !!!
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

bmbm40
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Re: AX15 in a Bronco with a I6

Post #9 by bmbm40 » Thu Apr 25, 2019 10:25 pm

Looks good!
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 1.08 on D8 head, power brakes, rear limited slip, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

jimmyv65
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Posts: 96
Joined: Sun Aug 26, 2012 4:29 pm

Re: AX15 in a Bronco with an I6

Post #10 by jimmyv65 » Fri Apr 26, 2019 2:29 pm

chad wrote:
the lowest point in this rig?

Were suspension bushings used 4 the 3 rubber mount points?

Keep Doin It !!!


Yes, that brace is now the low point, but not by much. I just measured in my garage. the bolts in the brace ar 16.75" from the ground, the trans case is 17.25" and the radius arm mounting points are 17.00". So, not crazy low.

Bushing: Those are some poly exhaust hangers I had laying around. They were for my son's car. Seemed about the right size, so .....

Maybe these pics show it better.
Image
Image
Last edited by jimmyv65 on Fri Apr 26, 2019 2:40 pm, edited 1 time in total.
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

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chad
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Re: AX15 in a Bronco with a I6

Post #11 by chad » Fri Apr 26, 2019 2:39 pm

No! not low @ all. I wuz just wondering abt the diff btw the 2: bell vs t. mount.

And Y the Ax15?
Thnx Jim !
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

jimmyv65
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Re: AX15 in a Bronco with a I6

Post #12 by jimmyv65 » Fri Apr 26, 2019 2:59 pm

chad wrote:bell vs t. mount.


The bell is at 21" from ground at the front side and 22.5" from ground at the adapter plate between the bell and the AX15.

chad wrote:And Y the Ax15?


Well, I guess your choices are the MD05, the NV3500 series or the AX15.
Why AX15?
--Separate Bell: I wanted a separate bell housing since I had a nice aluminum one and wanted future flexibility. So no MD05
--Non-hydro Clutch: I wanted to keep my current clutch set up for simplicity of the project.
--Street Drivability: I mainly street drive it and the AX15 is supposed to be the most road drivable in terms of shifting manners.
--300+HP: The AX15 is used in many higher HP application. In case of a future turbo or ???
--ICON: I noticed that ICON and the other high $$$ builders use the AX15. I figured they chose it for some important reasons.

chad wrote:Thanks


No problem. Hope this info helps someone on a future I6 build.
1966 Bronco-'78 250-Meagsquirted TBI, DUI, Header, Cam, Hydroboost & Front Disc, Uncut, 1" body lift, 2.0" suspension lift

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chad
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AX15 in a Bronco with a I6

Post #13 by chad » Fri Apr 26, 2019 3:55 pm

I'd do ZF (2 PTOs, lower 1st) but heavier, expensive, DS changes, etc.
Axis is good as it's still being made...
this NV was $200, 4:1first gear, <100 lbs, 300 HP limit, shifts like a car...

A 1 inch BL and a 5 speed R 2 updates the rig shoulda got new...

Don't know how I'll get ahold of the $800 11 pac leafs but as the use changes
I think that's a good idea (w/4 air bags 4 hauling needs). The frnt discs have been on 20 yrs.
If the RBS doesn't wrk out (well) I'll go efi too (like to have that w/the VI head - try'n figure out
6 injectors at the current bosses its intake has).

glad U stay in touch~
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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