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Old 03-20-2013, 05:39 PM
JohnnyD JohnnyD is offline
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Join Date: Mar 2013
Location: Manchester
Age: 49
Posts: 15
Gender: Male
Vehicle: 2012 Ram 1500 Express
Trim Level: Express
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Default Should I swap my 3.55 to 3.92 gears?

I have a 2012 Ram 1500 Express, with the 3.55 gears. Towing capacity is 8750 I believe, or thereabouts. Goes up to 10050 or something like that with the 3.92's.

My situation is this - I currently tow a Sea Ray 215 Express Cruiser on an aluminum Venture trailer. The boat is around 3900 lbs, the trailer I think 800 or 900 lbs. With fuel, fresh water, and gear, I think I'm probably around 5500-6000 lbs. I towed this last season every weekend about an hour each way, and it worked great, could barely tell the boat was even back there.

We are in the process of buying a new boat. It's a 25 foot Crownline 250 cr, which is a much heavier boat and trailer combo. Boat is 6400, trailer around 1200-1300. I plan on towing it with as little fuel and water as possible, and it will only be a couple of times a year as we are keeping it at a slip in-season. It's a trailer slip, so I'll have to unload and load each weekend, but that shouldn't be an issue I'd think. Factoring in fuel and gear, probably gonna be close to 8500 lbs.

Where we are towing it, the terrain is mostly rolling hills or flat. I have a weight distribution hitch, though I've never used the spring bars for the current boat.

My real question here is, should I consider swapping out those 3.55 for 3.92 gears? I talked to my dealer and he priced at 1200 per axle. I don't think I'll be towing up any mountains because quite frankly I'm nervous about that much weight on those hills up, and down. Is it worth it for me to get this done?
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