Remember you are also losing more power through the 4l80 trans than the 4l65. I think its 5 to 10 percent more. This would also cause you to get worse fuel milage.
Remember you are also losing more power through the 4l80 trans than the 4l65. I think its 5 to 10 percent more. This would also cause you to get worse fuel milage.
2004 Chevy Silverado 2500 LT SB CC 6.0L Metallic Gray, 275/55's on 20's, billet grill, stainless bow tie, and Rhino Liner over the rails. Radix with 2.9 pulley, CAI from Summit, Z06 Cam, Flex-a-lite fans and Tuning by Nelson.
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