I'm pretty interested in sled pulling and I have a few questions about it. First off what are all the different classes? next, do you pull in 4lo or 4hi? Now I know that my tranny probably won't be able to handle it since it is a stock 47RE but would a new valve body be enough to run it in a stock class or something? Thanks guys

 

You will want to go in the stock class, and go in 4lo with your auto

 

When I pulled my truck with an auto I pulled in 4lo. All mine had done was a Dunrite vb. Would have done a lot better if I had weighed more.

 

You won't hurt the auto that bad if you just want to hook a couple times unless you have some big power adders on there with a stock tranny. Go out there I would put it in 4lo and in 2 and don't let it shift into 3rd. Don't plan on winning but man you will get addicted to it fast. Last year I was pulling a stock truck and now I'm in a whole new class with more things to add.

 

I'm getting excited, my buddy says they have pull near his cabin in Cummberland Wisconsin and I think I might enter in the competition. So for the start do I Floor it or ease into it or what?

 

I'm kinda curious about this too... Around here at the Marshfield fair I saw (last year) a few mostly stock if not mildly modified trucks pulling. The best two were a 6.0L powerstroke smoking a little, and a common rail dually work truck. I can't remember who won, bit it was pretty close. I don't think anyone got a full pull... sled weight couldn't have been more than 10K lbs, if that.

I had my stock radials on and was on a limping tranny at the time, so I didn't enter. This year I might show them how its done... or how to break a truck!

I was thinking the 33x12.5 A/T's would help as I saw countless Avalanches and Silverados just digging in around 1/3-1/2 track.

I don't know anything about how to pull, but it seems to me if you were to lock the TCC in high RPM's in 2nd or 3rd on 4 Lo it would pull close to the end...versus a stock stall converter running out of steam? Any thoughts?

 

The local sled is 35K....I bet yours is about the same. That box is heavy.

 

The problem with doing this is that it is that the stock converter will not likely hold under full power pulling a sled. If you go with a performance 2 or three disc it should be fine.....then the main clutches will be a problem with out a valve body upgrade....then the input shaft might be a problem. With mostly stock auto it is kindof dicey pulling a sled if the engine has much snort to it.

 

... especially not with a 47RE