View Full Version : WTB - 3.33 Ratio gear set

09-19-2010, 11:22 PM
Looking to buy a 3.33 gearset for a '96 4T60-E. Buying a '96 GP in a few weeks, and don't want to deal with the 2.84 set I think it has.

09-20-2010, 01:37 AM
IIRC it's not just the differential gears that make up the ratio, it's those gears plus the drive/driven chain sprokets in the transmission that all come together in the transmission to make your "final drive ratio"

09-20-2010, 02:28 AM
The final drive has it's own ratio, then there is the chain ratio too. Both combined make for the overall ratio. I think.

I have a few stashed, but I don't remember what ratios they were. How do you tell by looking at them?

09-20-2010, 02:12 PM
Yeah, I need both the diff and the chain set. I had a spreadsheet one time that showed all the combos, but can't find it now.

09-20-2010, 06:54 PM
Strange that the 96 GP doesn't have the 3.33 ratio, Luke's cutlass supreme with the 4t60-E has a 3.33

09-21-2010, 10:21 AM
Nah, this is a base 3100 with a column shift.... I'm certain it has 2.84 because it has no power on takeoff, but goes like stink on the highway.

09-21-2010, 02:11 PM
His is a base 3100 too, but it has console shift. If you've got the VIN number and you use this http://www.compnine.com/vid.php you can find the FDR that came in it new.

09-21-2010, 09:32 PM
Just had a chance to check it when they were over here.... F17... 2.84. Damn.

09-27-2010, 04:46 PM
A 2.84 trans has a 35:35 chain ratio, same as a 3.06 or 3.33 trans. So, you only need a 3.33 diff and sun gear with the correct thread pitch and direction. There were 3 different pitch/direction combos from 92-97.