33" Tires w/4.56 gears

xsports33 · January 24, 2007

Does anyone run 33" tires with 4.56 gears that have some real world, seat of your pants experience they can share with me? Power (it must be insane!), MPG, Towing, and daily driving? I'm re-gearing soon and am going back and forth between 4.10 and 4.56's. I currently have 6"lift w/33's and 3.42 in the rear that really lags. 85% of my driving is highway and i only tow in the summer a 4K boat.

I've done a search, but it seems most people have 35" w/4.56. I plan on getting 35's once i run down my 33's. A supercharger may come into play aa year or so from now if that makes a difference. Thanks all

vxaxv17 · January 24, 2007

Does anyone run 33" tires with 4.56 gears that have some real world, seat of your pants experience they can share with me? Power (it must be insane!), MPG, Towing, and daily driving? I'm re-gearing soon and am going back and forth between 4.10 and 4.56's. I currently have 6"lift w/33's and 3.42 in the rear that really lags. 85% of my driving is highway and i only tow in the summer a 4K boat.

I've done a search, but it seems most people have 35" w/4.56. I plan on getting 35's once i run down my 33's. A supercharger may come into play aa year or so from now if that makes a difference. Thanks all

I have the 4.10s in my truck with a 6" lift running 33's. I dont do any towing but for normal every day driving i have not noticed any difference between the stock tires and the 33s as far as acceleration. My truck still takes off pretty quickly without any modifications. I figure when i get a custom tune i'll get even more out of it. BTW, i have the 6.0L. I wouldnt think a switch to 4.56 would be necessary - even with 35's. The 4.10s should be ok and still save you some mileage. Those 3.42s must be a dog ;) 4.56s would be killer.

s2gots · January 26, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

Sunoco · January 26, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

4.56 is an overkill for a 33 unless you think you're going bigger to a 35 or larger later a 3.73 or a 4.10 will be more than fine. I have 33's with a 3.42 and a tuner, the tuner woke mine up a lot but I still want to regear. I'll go to 3.73 this year but then I'm not going bigger than a 33 tire too.

Sunoco · January 26, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

4.56 and a 6.0 and you're fuel economy is not that bad? Define not that bad...10 MPG or less? You can't possibly be getting better than 10MPG with that set up...and I bet it hauls butt too.

xsports33 · January 26, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

That's AWESOME! If you're around 2200 RPMs at 80MPH then you're right in the optimal range for the engine. So i would believe that you're getting good fuel economy ~16+. I plan on getting 35's once I wear out my 33's, but that won't be for a few years. So it looks like i'll have great towing power until then.

Halen5150 · January 26, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

That's AWESOME! If you're around 2200 RPMs at 80MPH then you're right in the optimal range for the engine. So i would believe that you're getting good fuel economy ~16+. I plan on getting 35's once I wear out my 33's, but that won't be for a few years. So it looks like i'll have great towing power until then.

I will sh*t a brick if he's getting 16+ mpg with that setup.

Sunoco · January 27, 2007

I have the 6.0 with 33" and 4.56....I can run at 80 mph all day, and just break 2200 rpm. Fuel eco is not that bad actually....I like the set up

That's AWESOME! If you're around 2200 RPMs at 80MPH then you're right in the optimal range for the engine. So i would believe that you're getting good fuel economy ~16+. I plan on getting 35's once I wear out my 33's, but that won't be for a few years. So it looks like i'll have great towing power until then.

I will sh*t a brick if he's getting 16+ mpg with that setup.

I second that

s2gots · January 29, 2007

I will s**t a brick too!!! My odo doesnt light up, so I cant really tell the exact MPG. Ive had this rig for about 3 weeks now. When I picked it up, I had to tow back a toyota pick up. With a full tank, up and down valleys, cruising at 70 mph, I went +/- 250 miles to my door step. I counted the miles going down where I picked it up at with the toyota. It took a tank and a quarter to get there with the yota...This set up on the truck seems to be right on the money for both worlds. Fuel and power. Its lifted, good lift kit, nice wheels and tires, a 2500, and Im happy with it, especially if im towing, which is what this truck are made for, . If I really was into the whole fuel economy thing, I would probably look into a camry or something!!

xsports33 give me a jingle if you gear to 4.56, I would like to know your experiece with the set up and how you like it...

xsports33 · January 29, 2007

I'm getting the 4.56's installed today so i'll let you guys know in a few days how that's working out for me. I know the 33"s are going to make me run a high RPM cruising, but i'll let you know the power and mpgs. I won't know the towing effects right away because i have to break in the new gears for ~500 miles before i can tow.

chud53 · January 30, 2007

so yeah where can you go to get new gears? cuz running 35'' tires on a 3.73 is KILLING ME, i get like 10 mpg. I NEED TO REGEAR soo bad soo if yall could give me some info. and some pricing that would be much appreciated

xsports33 · January 31, 2007

OMG I drive a completely different truck with 4.56 gears. I pull so hard off the line it ridiculous, and I haven’t even gunned it out of the hole yet. I have about 250 more miles to break in the new gears then I can start turning some serious rubber. It’s weird, my truck would always down shift going up various grades, but now I never down shift. My truck feels like it’s always pulling forward and wanting to accelerate. I was climbing a pretty steep grade last night at maybe ¼ throttle at 80mph and still accelerating. My MPG went down about 1-1.5 highway, but my power increased exponentially. My city MPG actually went up because I don’t have to put some much pedal down to get going. Once I get the 35” on I’ll be in a lower RPM range that will **maybe** give me a tad more MPG highway.

In a few days i'll let you guys know how towing goes.