Hydro-gear has torque specs on their website if that's what you're interested in.

Here is a link that might be useful: Hydro-Gear

Actually, I was wanting to compare the TuffTorq numbers to the Hydro that I have. I can't even find any info from Sears (now that's really surprising) about the hydrogear I have, but I wanted to know if my GT really does have an adequate tranny, like K66, or whatever for a GT-type tractor or have I been duped like many with horsepower ratings.

According to Sears Parts your tractor has the -3000 HG which compares to the K66 in torque and weight specs.

Ahhhhhh. Okay, thanks jdd332d. That's what I wanted to know.

If you look up under the hitch plate, you'll see the ID stickers on your transaxle.

Okay, thanks.

I thought a Hydrogear had #s that were a bit better than a K66.I thought I saw a comparison a couple months ago. Please tell me If I am incorrect.

messmaker that's right. Last time this comparison came up a few months ago it was pointed out that the Hydrogear did have slightly higher torque numbers that the comparable Tuff Torq.

That Hydro-Gear trans model that was being discussed as slightly higher torque with 23-in. tires and 1-in. axles was the 331-3000 series that goes back to the GT 3000.

Here are the torque ratings for the heavy-duty integrated transaxles, including the 331-3000.