Need More Power
Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
I had the 2v 5.4 in my '00 7700, and pulled a 6k boat, 8k dump trailer and a large slide-in camper with it a lot, and never had any power issues. I would suspect the 35" tires are causing the problems. Lower gears would help. I think the 7700 had 4.10s, but I would want something closer to 4.56 in an SD because of the the much higher curb weight.
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Freshman User
Joined: Jan 2008
Posts: 32
Likes: 0
Yeah i was looking in to gears i just didnt want to have to do that. But i guess i will go ahead and buy 4.88 gears. Got any other power adders?
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Senior User
Joined: Mar 2006
Posts: 425
Likes: 0
From: Norwalk, CA
Gears are gonna be the best way to get back to stock intended power. Im only on 33" MTR's and i can feel how slow the truck is now compared to when i had lighter 33" Pro Comps on the wheels. You might wanna try finding a nice light set of wheels to compliment the gears so you dont have all that rotating mass sucking away at the power.
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Verdad Gallardo
Senior User
Joined: Dec 2007
Posts: 363
Likes: 0
From: Raleigh, NC
Lower gears will help for sure. I'm running 38.5's on mine and noticed a big difference with the 4.88 gears. I don't tow any more but really love the lower gears for better acceleration. Yours most likely has 3.73's in it from the factory.
Senior User
Joined: Aug 2003
Posts: 289
Likes: 0
Theres always a supercharger, I would go for a whipple or kenne bell if available for your engine. I know I had a v10 with 4:30's and wished I had 4:56 or preferably 4:88's (I had a 6in. lift with 38's. with 35's I would look at 4:56's personally (and it will be expensive if you cant do it yourself, nearly 1500-2000 for both axles.)
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