01-19-04, 04:37 PM
Not sure if this is the right spot for this or not. Does anybody know if there are any lower gears available for the 4T80E trans I know the Deville is at 3.30 the Arora is 3.50 and the STS is 3.70 or there abouts. I am looking for something in the 4.10 range.
01-19-04, 09:57 PM
The 3.71 final drive ratio is the "lowest" gearing available in the 4T80E. That was the factory installed gearing with the L37 300 HP engine in the STS/DTS/ETC cars....
fyi, exact numbers are 3.11 for sls/esc/dhs, 3.48 for aurora, 3.71 for sts/etc/dts/autobahn aurora.
never heard of anything higher....try domesticperformance.com, i know they sell "bulletproof" 4t80e's, with LSD's, maybe they can do somthing with the gears, worth a shot