4th Gear Pulling

[whitey]

Pulling 4th gear since it is 1:1. Does the converter need to locked.

 

[diesel-max]

Yes.

 

[duramaxzak]

What gear's and tire size do you have?

 

[whitey]

Gear is 410
tire size are 285

 

[duramaxzak]

Gear is 410
tire size are 285

I don't think you have enough ponies to run 4th! Maybe if its a real loose track.

 

[whitey]

How much HP is enough? I'm at 750 HP.

 

[clrussell]

Buddy used to pull 4th locked with 4.56s and 35s.. Then went to 285s..

Truck was probably around 700hp


Sent from my iPhone using Tapatalk

 

[duramaxzak]

how much hp is enough? I'm at 750 hp.

751! :d

 

[duramaxzak]

4:10's 3rd

View attachment 38487

 

[duramaxzak]

4:10's 4th

View attachment 38488

 

[duramaxzak]

4:56's 4th

View attachment 38489

 

[duramaxzak]

3:73's 3rd

View attachment 38490

 

[Yellow Jacket]

3:73's 3rd

View attachment 38490

Can u attach one with 3rd & 3.73's with 35's and one with 3rd & 3.42's with 35's... But at 3500 rpm

 

[duramaxzak]

Can u attach one with 3rd & 3.73's with 35's and one with 3rd & 3.42's with 35's... But at 3500 rpm

Here's a link to the calculator I used.

http://www.public.asu.edu/~grover/willys/speed.html

 

[ecc_33]

IMHO you would be better off with 3rd gear and 35" tires with that gear ratio. I pulled with 4.56 gears with around 700hp and in 4th gear still had to unlock the converter at the end. This was on very tight ohio clay tracks. I tried 33" tires with same results. Not enough HP's plain and simple.

 

[whitey]

Yes.

What happens if converter is not locked?

 

[duramaxzak]

What happens if converter is not locked?

Build lots of heat in your tranny and converter.

 

[ikeG]

What happens if converter is not locked?

No wheel speed. A well coupling convertor may do alright but you'd be peeing into the wind with no lock up. You're in that no mans land as far as your gearing. 4.10 is too low for 3rd gear and too high for 4th. What size tire?

 

[whitey]

285

 

[JD Dave]

The easy way to find out is to give it a try if your on the fence.