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I'm frustrated and can't think straight. 2006 Silverado Ext 5.3L, 4L65E (not original), 2wd Truck came with a 3.23 gear. I've been pulling a 6000 lbs trailer for 4 years. I just swapped a new 3.73 in, looking for a little more take off power. Now it feels like I have less take off...

Hi all! Another noob! Driving a 2006 Silverado Extended Cab 2wd. My first brand new vehicle. After 9 years, it's time to upgrade. I look forward to hearing your opinions. Actually, first upgrade(?) was 4 years ago. The sprag blew in the 4L60E. I had it fixed and ran it another 3,000 miles...