Changing the gears in my suburban
I have decided to change the gears in my suburban (2008 5.3L 4sp auto), but not sure how much of a change to make. I currently have 3.73 gears, and was thinking 4.30 because 4.10 doesn't change much,...
Forum Discussion
BenK wrote:
There is a potential weakness in the higher numerical gear sets because the pinion gear get pretty small in dia vs the ring gear..
I have read that the reason the GM Dmax only comes with a 3.73 is that in testing, the lower gears would not hold up.
The pinion has less tooth area in contact with the ring gear... That is the issue.
In spite of this, I feel it is a worthwhile mod for some.
It will perform better, and as long as the usage is low, will likely be trouble free. That covers a lot of people.
For those that tow heavy and often.... A half ton will always be just that.
