Diesel Forum - TheDieselStop.com - Reply to Topic
Off-Road Discussions Off-Road, modifications and racing forum. This is for Off-Road racing only, The Diesel Stop does not promote speeding or racing on the street and does not promote tampering with ANY EPA pollution devices for street driven cars or trucks!

Thread: sled pulling gear Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
07-26-2012 09:14 AM
Paul H Just wondering what 4:56 gears and lockers will do

was told once to leave it in drive, and loc the converter and let it pull till it runs out of power
10-10-2006 04:36 PM
whitestroke00
Re: sled pulling gear

I take off in second and lock the convertor as soon is i get my foot to the floor and the rpms hit redline.
10-10-2006 10:12 AM
pipewhiner
Re: sled pulling gear

They are posted Brian. We have even talked about them in chat!! [img]/ubbthreads/images/graemlins/smokin.gif[/img]
10-10-2006 07:36 AM
bbunting
Re: sled pulling gear

[ QUOTE ]
[ QUOTE ]
I saw some fool in a 6.0 pullin' in 4-hi 1st.


Didn't do all that bad.

[/ QUOTE ]


That fool took it for 305' in high range

[/ QUOTE ]

post the vids....
10-10-2006 07:32 AM
pipewhiner
Re: sled pulling gear

[ QUOTE ]
I saw some fool in a 6.0 pullin' in 4-hi 1st.


Didn't do all that bad.

[/ QUOTE ]


That fool took it for 305' in high range
10-09-2006 09:14 PM
jasonlambert
Re: sled pulling gear

whitestroke, do you take off in 1st or second? about when do you lock the tc?
10-09-2006 08:25 PM
whitestroke00
Re: sled pulling gear

The problem pulling in drive with just a slighty modded truck is that if you start to bounce and have to back out of throttle, the truck downshifts into 2nd. Pulling first gear high range is about the same as pulling in drive buts it pretty easy to get under the turbo as the sled catches up. Another thing to watch is your competition. If your at a pull with a lot of big power trucks that are stopping 275-300, with a lightly modded truck you dont have enough track to let the truck get into drive and take advantage of the wheel speed before the sled hits and shifts the truck back into second anyways. Now if your in a true "street" class where its all trucks with chips, tuners, etc and stock or very mild turbo ugrades and the sled operator as the sled set accodingly, yes drive is the way to go. I my self almost always pull 2nd gear, convertor locked.
10-09-2006 06:27 AM
mech2161
Re: sled pulling gear

I pull low on a tite track and high on a loose track.
10-08-2006 08:22 PM
444turbodiesel
Re: sled pulling gear

So what are you running in? (HIGH or LOW)
10-08-2006 08:13 PM
mech2161
Re: sled pulling gear

In a 6sp there is 4mph difference between 4th low 2nd high and the same between 2nd high and 5th low. Thats counting as 1(L)23456.
10-08-2006 04:38 PM
444turbodiesel
Re: sled pulling gear

The fewer gear reduction sets you run the power through, the more power ends up at the wheels. Which is the reason most dragsters have gone to direct drive (no transmission) with the only gear reduction in the axle. Of course this would only be practical in a dedicated pulling truck.

Just thinking outloud...

I haven't been inside a 271 to see the gear set, but if guys like bbunting are running in LOW range, it must be pretty robust. Running in direct (HIGH range) would be more efficient though if you got the axle ratio right.
10-08-2006 04:06 PM
thedieselkid
Re: sled pulling gear

Not sure how well that would work. I do know that the TC is very strong. I would think that the rest of the drive line would break first.
10-08-2006 03:55 PM
444turbodiesel
Re: sled pulling gear

[ QUOTE ]
Wouldn't third gear in 4 low be about the same as 1st high. You just have the extra 2 gears down low if you start bogging and you have some help getting the rpms up when getting the sled going.

[/ QUOTE ]

It's pretty close, I just thought the big horsepower guys used HIGH range for wheel speed.
I don't want to think about the amount of power going through the LOW range gears of the TC with the transmission in the lower gears.

I'd think with proper axle gearing, you could use HIGH range and take the load off the TC gears which would be the weak link.
10-08-2006 01:55 PM
thedieselkid
Re: sled pulling gear

That was a nice pull, now after seeing that I think I want a sled pulling program.
10-08-2006 01:09 PM
bbunting
Re: sled pulling gear

here is an example of what I am talking about

video

Programmed shift points, in drive, based on wheel speed.
This thread has more than 15 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome