Which transmission to use with Coyote motor

[Iwannagofast]

So I am thinking about putting a coyote motor in my bronco. Which Manual trans would I use to keep the 4 wheel drive and which transfer case? Any help would be much appreciated.

Thank you

Ryle

 

[Broncobowsher]

There is a mod motor to toploader conversion bellhousing. So just about anything that would bolt to a small block V8 can be made to work. So the stock 3-speed should work but expect that to be a poor match to the engine's powerband. Also available are wide and close ratio 5-speeds if you want the most possible gears. NV3550 or a direct bolt up would be the ZF 5-speed so long as you get one from a modular engine. There is also the Mazda 5-speed used in the F150s that would bolt right up. So far all these use or can be adapted to the stock Bronco Dana 20 transfer case.

If you went real crazy, the 6-speed manual used in big trucks (V10s and the 5.4s V8 in F250 and F350) bolt to any modular block. I think by this time the transfer case input has changed so you would be stuck with running an Atlas. It is massive, needing a body lift and maybe a frame stretch as well.

Do you want this to drive like a car with a close ratio transmission, or drive like a truck with a wide ratio transmission?

 

[Iwannagofast]

There is a mod motor to toploader conversion bellhousing. So just about anything that would bolt to a small block V8 can be made to work. So the stock 3-speed should work but expect that to be a poor match to the engine's powerband. Also available are wide and close ratio 5-speeds if you want the most possible gears. NV3550 or a direct bolt up would be the ZF 5-speed so long as you get one from a modular engine. There is also the Mazda 5-speed used in the F150s that would bolt right up. So far all these use or can be adapted to the stock Bronco Dana 20 transfer case.

If you went real crazy, the 6-speed manual used in big trucks (V10s and the 5.4s V8 in F250 and F350) bolt to any modular block. I think by this time the transfer case input has changed so you would be stuck with running an Atlas. It is massive, needing a body lift and maybe a frame stretch as well.

Do you want this to drive like a car with a close ratio transmission, or drive like a truck with a wide ratio transmission?

Thank you, I would like for it to drive like a car or truck just smooth for daily driving really. Could I use the mustang 5 speed transmission that comes with these motors from factory? I don't think I need to go that crazy with a huge f350 trans but would like for everything to work very well together.

 

[Broncobowsher]

I don't think you will find a mustang 5-speed behind a coyote, they were 6-speeds.
And you won't get to use it, there is no provision for a transfer case of any kind.

 

[Timmy390]

Thank you, I would like for it to drive like a car or truck just smooth for daily driving really. Could I use the mustang 5 speed transmission that comes with these motors from factory? I don't think I need to go that crazy with a huge f350 trans but would like for everything to work very well together.

I think it all depends on if there is an adapter out there to attach the 6-speed to the D20. Also if the output shaft will work with the D20 and if not, does anyone make one that will for that 6-speed.

Tim

 

[Iwannagofast]

I don't think you will find a mustang 5-speed behind a coyote, they were 6-speeds.
And you won't get to use it, there is no provision for a transfer case of any kind.

So which 5 speed would you recommend to use behind the coyote?

 

[Timmy390]

So which 5 speed would you recommend to use behind the coyote?

While the Coyote is cool and has the WOW factor, 435 horsepower @ 6500 rpm and 400 ft-lb of torque @ 4250 rpm are just not suited the Bronco IMO. You could get the same (or even more) from an almost stock 351W with GT40 stuff and a cam. It would be usable power and torque in the Bronco.

If I were going to go Coyote I would go ZF-5 speed or with the Mazda 5-speed. I would also run very low gears if I wanted to use the power of the Coyote.

Tim

 

[07XL0027]

So I am thinking about putting a coyote motor in my bronco. Which Manual trans would I use to keep the 4 wheel drive and which transfer case? Any help would be much appreciated.



Thank you



Ryle

I used a new crate AX-15, 5 speed from Advance Adapters. From what Advance Adapters told me, the NV3550 is a copy of the AX-15. You can buy a new AX-15 for the price of a rebuilt NV3550. They sold me the transmission and the adapters to mount the Dana 20 and the bell housing. FYI it's the same transmission setup that ICON uses. You can also use Advance Adapter's Atlas transfer case if you like.


Sent from my iPhone using Tapatalk

 

[07XL0027]

You can also use a Coyote out of an F-150. I believe the HP rating on them is 360-385ish depending on the year of production. I used the original 302. If you want to go another direction BC Broncos is retrofitting V-6 Ecoboost engines in early Broncos as well as, Coyotes.

 

[Broncobowsher]

So which 5 speed would you recommend to use behind the coyote?

You want a car like 5-speed manual behind a coyote.
The AX15/NV3550 is probably the better driving but more expensive option.
On a budget, the Mazda M5R2 from a '97+ F150 is a pretty good option as well and it only takes a simple adaptor (the same kit for putting a ZF in front of a Dana 20) to keep your existing transfer case.

 

[Miker]

Look at torque limits on the NV3550..........

 

[Broncobowsher]

Look at torque limits on the NV3550..........

And people still put them in and they live.

 

[MarsChariot]

And people still put them in and they live.

Yes, the myth that NV3550s are too weak just will not die.

 

[Iwannagofast]

Does anyone know what engine control pack to use with the coyote swap?

 

[Whoaa]

The NV3550 is a great transmission. For an honest Apples-to-Apples comparision of factory torque and hp ratings you have to take into consideration the overall weight of an Early Bronco...much less than a full size truck.

By todays standards a modest built engine making around 300-350 hp & torque, 5 speed trans, 35" -37" rubber, and 4:88 -5:13 gearing will make a Bronco sing!

 

[chuck]

Look at torque limits on the NV3550..........

I did and this is what I found. The NV 3550 is rated 300 ft/lbs torque
The ZF S5-47 (used with the coyote) is rated 470 ft/lbs torque.
The ZF S5-42 ( used with he 302/351) is rated at 420 ft/lbs torque
We dinoed a EB with the coyote at a show recently but had to stop because the tires were not up to the speed and got too hot. It dinoed at 502 ft/lbs torque.
That number is probably about as hi is the stock coyote will go but the tires were smoking so not sure. Anyway, even the S5-47 is not rated for the coyote torque at max. but the good side is for you to apply max everything has to be just right and there is always a weak link. Most of the time that is the tire to road surface. In other words it is hard to apply max torque with the tires spinning or something breaking. I believe that the nv3550 last at all even with a good 302 is the driver and/or the weak link.
And about that torque. The coyote torque is very diff that the old school torque. The coyote will idle at 500 rpms and go up to 6500 very quickly but also very smoothly. Duel over head cams and computer controlled timing and fuel makes that possible. Drive one and the seat of your pants will know what I am talking about.

 

[Broncobowsher]

Typical manual transmission torque limitation is the lowest gear (most internal stress).
Not likely to reach peak torque in that granny 1st gear.

Think about all the NV3550s running around behind engines with more power than they are rated for and they live.

 

[chuck]

I think it depends a lot on the driver. A heavy foot is hard on everything.

 

[Broncobowsher]

There are those who can break an anvil with a rubber mallet.

 

[thorgan]

If money is no object, contact Rockland Standard Gear. http://www.rsgear.com/
They have a transmission combination that uses a Tremec T56 (think Cobra Mustangs, Corvettes, Camaros, Vipers) that's rated to 700 horsepower and uses the Corvette intermediate housing that will provide the mating surface for an adapter to a transfer case. They provide the adapter as well. A Dana 20 might be adapted here but the ideal setup would be an Atlas since the gearing of the T56 is very tall and car-like in first gear where the extra low gearing of the Atlas can be very useful. There are plenty of bellhousings to mount the T56 to the Coyote.

What you get here is a very strong car transmission that shifts super fast. We're talking faster than you can move the clutch lever in and out. This transmission was available in the Chevy SSR pickup truck which had a curb weight on the order of a Bronco so there's no question of it's strength (unless we're talking about one of the early Borg Warner versions that came in the early 90's Camaros). Matter of fact, I was watching a Youtube video just last night about a guy with a 1966 Ford Fairlane running a twin turbo Windsor-based 427. He was running low 10's to high 9's in the quarter mile and his transmission of choice is a T56. It was very impressive! He even mentioned that, in that car with that engine, he would usually see as high as 20 mpg on the highway!

Also, both 5th gear and 6th gear are overdrives so you'd definitely want to take into account the rpm range that the Coyote is happy with, the relatively poor drag coefficient afforded by the barn-door-bronco body shape, the tire size you want to run, and the cruising speed you want before regearing the axles to suit.

I was looking into this combination before I decided that my wife should be able to happily drive my '69. Now I'm going with a 4R70W.