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help me build my tow rig

1487 Views 12 Replies 6 Participants Last post by  hobie
so i bought this 02 350 last year and i havent been happy with its power. i tow a 12k lbs toy hauler and about 1 to 2k lbs on my truck. going up the grade on the 15, it kill it. i go like 40 mph. i thought i needed a bigger truck until i talked to jody at dptuner. he is getting me an adjustable chip to add 80hp and lower settings for altitude. the truck already has axhaust. i am not sure which kind. and it has some sort of intake. it has the additional pipes that go into the fenders that stockers dont have. it also has 35's on it.

i know i need to get back to stock gearing. right now it takes a 2" raised hitch to hitch up to my trailer. if i put 33's on it, the tires will look a litter smaller, and my hitch will be another inch lower. so should i go with 33's or should i just do a gear swap to 4.10's or 4.30's?. if i go with 33's i will have to get new rims and tires, cuz my rims now are 18's and there arent too many good option for 33's with 18" rims.

other than that, what other things should i do to make this a good tow rig? i bought some guages. a turbo guage and pyrometer. should i get other gauges too?

please help me revive this truck and make it work for my application.
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Is it an Auto or Manual?

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its an auto...and the truck is red /ubbthreads/images/graemlins/wink.gif
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Wait on the gearing till you see how well that chip does for ya. Lots of trucks on this site running 3.73's and 37's with no problem. Those DP tunes will help more than ya think. Diesels need 2 things AIR and more AIR. Let it breathe and she will run like a rapped ape for ya. As I recall that grade is fairly steep but its not that long. Youll be running up it at 55 pretty soon. Dont be afraid to turn the OD off and let your foot on the floor. Just watch the Pyro, you do have a pyro gauge right?

BTW, welcome to the forum. Thats a hellova rock crawler you have. Looks like we might just have us a new lift/tire expert for our site /ubbthreads/images/graemlins/biggrin.gif

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thanks. ya it does alright. i dont think of myself as an expert though /ubbthreads/images/graemlins/blush.gif

so really 37's towing with stock gears? wow. when i go up the grade, i definetly am out of OD. i will wait till i get the chip and see what happens to decied what to do with tire size.

right now, i dont have any guages. i have a kit that has a pyrometer and a turbo boost guage, but no tranny guage. i will get one. are those the only ones i need?
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Where are you getting the chip from?

There is no comparison from a chipped truck to stock. It feels like it doubles the hp. /ubbthreads/images/graemlins/smokin.gif

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i am getting a switchable chip from DP-tuner.com

Jody said he will put a few different settings on there depending on what altitude i am running at.
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i can tell you changing gears made ALL the differance in the world in my truck for towing and all around driveing. you wont be dissapointed with gears.

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so you suggest 4.10's with 35's? or should i go 4.30? will 4.30, take away my top end?
so i got the the tranny temp guage on order now. so i have turbo boost guate, pyrometer, and tranny temp. thats it for guages right? then i have dptuner chip coming in. and i am going to tow that way to see if i want to regear. other than that, anything else i need to for towing purposes? tranny stuff?
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