upgrade rear axle
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Junior User
Joined: Mar 2004
Posts: 67
Likes: 0
upgrade rear axle
I have a 98 expy w/ the 4.6 and 3.55 rear end plus tow package. Is it worth changing the rear end to 3.73 gears for more towing power or is this not feasable. I tow approx 4,000 lb trailer, flat land its OK but hill are a slow process. Any suggestions besides upgrading to a new 5.4 engine. Thanks.
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Swapping the 3.73 will definately help you out with getting up to speed quicker. If you don't already have Limited Slip, be sure to swap in one that does. Also, you can put some performance mods on the 4.6, such as exhaust, head work, tuner, etc... and make it do just as well as the 5.4.
Freshman User
Joined: Aug 2004
Posts: 34
Likes: 0
Heh 806,
I am assuming you have a 2wd otherwise you will need to swap out the gears in front too. If you do, it may just be easier to by a newer one with different gearing. i am just guessing but to change front and rear ring and pinion it would be about $1500 or so. I could be wrong though.
I am assuming you have a 2wd otherwise you will need to swap out the gears in front too. If you do, it may just be easier to by a newer one with different gearing. i am just guessing but to change front and rear ring and pinion it would be about $1500 or so. I could be wrong though.
