970 motor swap

[farmerjason84]

If putting a 504 in a 970 do you have to change clutch or flywheel im starting to piece together a farm puller

 

[Thad]

Im going to asume you are building a 8speed tractor. My suggestion would be get a flywheel and clutch set from a 1070 or 1175. The 970 is a 14 inch clutch and the others are a 15 inch. Depending on what you are going to do for engine performance and weight class will make a diff on what to do. You can beef up a 15 inch to hold alot of power. Thad

 

[farmerjason84]

No it is a poweer shift i dont think it will be a problem. i plan to have enough power that i dont need to use it so there is enough room for a bigger clutch

 

[Thad]

There isnt any bigger clutches for a powershift. The torquelimiter will be your 1st area of concern. It will slip if you make alot of power.

 

[Agri King]

Agree with Thad. At around 150 hp. you are going to slip the TL disc. If you are going to pull say a 9500 lbs. 5 mph limit class, 130ish hp with what you want to do will be fine. If you are thinking of 200+hp you better find a 8 spd. tractor.

 

[farmerjason84]

I have a 1370 with 350+ hp i pull it in 13,000- 16,000 7 mph farm class no trouble with powershift except broke shaft through the power shift clutches because it is hollow i tried to up date it to a 90 series wich is not but would not fit. I can't hold the head gaskets though plus its terrible heavy to haul wanting to get in the light classes.

can you put the eight speed in a pwershift tractor or do you just change the transmission

 

[Thad]

If you want to keep the powershift i know a guy who pulls one. He took the hub from a torque limiter and had it welded into a solid plate. He then bolted it to the flywheel inplace of the factory limiter. He made sure the pressure on the ps was bummped up a little. He pulls 10000lbs and he is a little over 300hp. To make your tractor a 8 speed you need a whole rearend. Thad