Top speed in 4L?

[Broncobreath]

What is the top speed you can drive in for 4L?

Sponsored

 

[HoosierDaddy]

Wouldn't surprise me if it's only 45mph at redline.
Consult a gearing chart for a theoretical guess.

 

[Broncobreath]

Thx

 

[HoosierDaddy]

I used a Ford's 10R80 trans, because that is what is available in the drop down menu . I'm not even sure what auto is in the Bronco, but I think the gearing is similar in all of these similar trannys.

So, on 35's with 4.70 gears @5500 rpm in 10th gear (.64 : 1) and low transfer.

2.72 t-case = 68.74mph
3.06 t-case = 61.11 mph

http://www.grimmjeeper.com/gears.html

 

[RagnarKon]

https://www.bronco6g.com/forum/thre...or-for-specific-tire-sizes-axle-ratios.21902/

Gearing chart with the various tire sizes, transmissions, etc. included.

 

[LockedBronco]

What is the top speed you can drive in for 4L?

Why?

 

[SS Bronco]

I used a Ford's 10R80 trans, because that is what is available in the drop down menu . I'm not even sure what auto is in the Bronco, but I think the gearing is similar in all of these similar trannys.

So, on 35's with 4.70 gears @5500 rpm in 10th gear (.64 : 1) and low transfer.

2.72 t-case = 68.74mph
3.06 t-case = 61.11 mph

http://www.grimmjeeper.com/gears.html

Thanks for doing the math for us. But The broncos won’t shift pass 7th in 4 low. About 30 is top speed

 

[LockedBronco]

Again why
Do you want to worse gas mileage?

 

[HoosierDaddy]

Thanks for doing the math for us. But The broncos won’t shift pass 7th in 4 low. About 30 is top speed

Cool, didn't know that!
7th gear comes out to 44 and 39 mph using the other inputs as listed above ... not that they are 100% correct, but should be pretty close.

Why?

Curiosity more than anything, I'd guess.

But I can see the use for "higher" speed lo range runs.
At the dunes, we had one classic Bronco that was freaking unstoppable in LOW, but we were spinning the hell out of it. There was not a dune out there we couldn't climb! Bang through the gears until it was in top gear and let it spin at 6k until you hit the top.
It just didn't do as well in Hi. We tried, but it just didn't work.
The other Bronco ran best in hi range. Plus the owner didn't like to spin it up like we did the 302.

Both were on 33's , one was a mild 302, the other was a pretty hot 289. Gearing unknown.

 

[Ground_zero298]

Around 39 is what I got. Maybe had a hair more but she was screaming as it was.

 

[Broncobreath]

Again why
Do you want to worse gas mileage?

Man you’re very insistent on your why. Because I’m in Buffalo and we have 4 feet of snow. So I was gonna use four-wheel-drive low and I wasn’t sure how much how Fast I can go. Does that explain everything? Are you OK with that?

 

[Gramd]

I hope he’s okay with it, he really wants to know why! Shame on you for wanting to know your vehicle better

 

[LockedBronco]

Around 39 is what I got. Maybe had a hair more but she was screaming as it was.

Could you see the gas gauge going down?

 

[LockedBronco]

Man you’re very insistent on your why. Because I’m in Buffalo and we have 4 feet of snow. So I was gonna use four-wheel-drive low and I wasn’t sure how much how Fast I can go. Does that explain everything? Are you OK with that?

I wouldn't recommend doing it.

 

[dgorsett]

Just a side note. Generally in low traction situations you're better off in high range unless you need more power.

Sponsored