I know I'm not the only person wanting to know how to improve this. Please post how many mpg's you are getting and what improvements you have done. So far I have add Hedman headers, crossover, 3'' straight pipe, MSD coil and Dist. Also deleted the EGR, and fresh air pump. I'm getting about 9-10 mpg.

 

You're doing good. Does it have 3.73 or 4.10 gears?

Mine was a '96 SC dually, 4.10/e4od and got right at 10 mpg regular daily driving. Back then gas was cheap so I didn't really care. Did put a Dynomax muffler on it. I also installed a Vortech supercharger later on, but don't recall getting any worse mileage. It's been years ago, and didn't really care about mileage then.

 

I had a 93 250 3.55 e4od with the gate down and nothing in it I got 15 mpg once.

 

Mine is a 96 460 4x4 with 4.10 gears and a manual trans. All stock except for no cat & a Magnaflow muffler. I get 11 in town, 14-15 on the hiway & 11 towing a Jeep on the hiway in the mountains. Oh, and I live at 6500 ft. elevation!

 

I have 4.10 its an 96 CC dually it seems to be around 8 with a load and 10 without. I have not checked highway yet. My next upgrade will be a cam and adjust timing. By the time I'm done with the upgrades I'm hoping to get 12-15 hauling but thats a BIG hope.

 

Hauling what? You and the dog??? That would be about all I'd expect from a 460 to get 12+ mpg on a regular basis.

Have you cut the restriction out of the intake tubes yet?

 

Haven't cut the tubes yet, but hauling an 69 gto, open floor steel 23 ft trailer. Like I said a big hope.

 

Ohhhh, you and the goat. Nothin' like dreamin' BIG!!!

The open trailer will help big time. A 460 doesn't really mind the weight, it's the added wind resistance of a box.

Pull the intake tubes apart, the center plastic piece has restrictors built in. Cut them off, leave enough to hook tubes back on.

Where's the timing? 10* is what I ran mine before the blower came around.

 

The truck is all stock beside what I just did. I haul the gto with my 04 250, but my wife drives it now to haul her horses. I picked up this truck back in aug for 2300. Hoping I can build it up to haul the gto and my 84 cadillac. But if I can't get decent mpg, I'm going to sell it and get a power stroke.

 

I know hauling both of them at the same time is going suck

 

Save your money and get a PSD now.

I had a new 2000 PSD, CC, DRW, 4.10/6 spd and it got 15 on the highway(empty), and about 11~ pulling my 40ft trailer(14K lbs). Stock, no tuner, straight piped.

My '96 460/4.10/e40d was 10 empty/7 pulling
my '99 V10/4.30/5 spd was 12 empty/9 pulling trailer




Sure miss those old trucks. That '96 was my favorite, especially once I put the supercharger on it!!

It ran 15.8's back then and back then the Lightnings were only going mid 15's. 5-6# of boost did WONDERS. But, gas was only a buck....

 

My 97 250 4x4 5 spd 4.10 gear reg cab gets 13.8 avg highway city mix and a high of 15.8 all highway. All stock, no mods.

 

The 5spd is a BIG plus. The automatic really sucks the life out of anything.
Your speed will also determine mileage. Slow and easy will help. Try running 70 and watch it take a dump.

 

Yeah I agree , slow down and you'll get better mileage . I let mine gag on the hills and that seems to help ;460 5 speed

 

Trying to find a PSD this body style that hasn't been ragged is hard. I like my 04 body style but I like the pre 97 better.