Blew up posi

CALEB STEWART

MEMBER
2000 GMC SIERRA
5.3L
V8
4WD
AUTOMATIC
200,000 MILES

I blew up my posi and I need to know about the gearing. If I go hire gearing what are the pros and cons and what if I go lower?

Monday, June 5th, 2017 AT 9:30 AM

1 Reply

CARADIODOC

MECHANIC
33,874 POSTS

You listed this as a four-wheel-drive. Both axles need to be the same gear ratio.

A higher gear ratio will give you more pulling torque, more engine noise, and more low-speed "get-up-and-go". It may cause a decrease in fuel mileage, but that can be offset by the engine not having to work so hard.