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Author Topic:   454 vortec
Dirt Newbie

Total posts: 4
posted March 28, 2005 01:28 PM  
I see on here some of you are getting 12-14 mpg with your 454s. I have a 1997 duelly 4x4 and I only get 11 mpg empty and 7mpg towing an open trailer that only is about 6500 pounds. What are you doing to get any milage out of them.

Dirt Maniac

Total posts: 192
posted March 28, 2005 02:54 PM  
I had a 96 3500 with the 454 the best I got was 13 MPG. That was no towing, 65 MPH driving
Towing a 24' enclosed I was right around that 6-7 mpg

Seems everyone tell me they are getting better milage then I ever get
Now I have diesels
my 2001 F-250 got around 14-16 around town
my 2005 F-350 gets around 11-14 around town

Dirt Freak

Total posts: 370
posted March 28, 2005 05:03 PM  
I gotta question how is that? My small block gets like 7 maybe 6. Put a trailer on it doesnt change a thing. I went 100 miles going anywhere from 60-80 and avg abnout 70 and i got high high 7 almost 8 with trailer car and all the gear. No trailer just around here still driving down hwy about 60 mph i get low 7's. Could be the gears but this truck will scoot so im wandering what is up with it. i had a 358 a 350 and now a 305 and all do about the same the 305 might do worse than any it seems like but i have a high rise intake and a edelbrock 600 carb. Headers with shorty glass packs 2 1/2" exhuast where is my problem at? Its a decent size truck and all but my brothers 460 bored over gets better mileage and raps more rpms than i do. Anyboy tell me how this is?

Dirt Freak

Total posts: 354
posted March 28, 2005 09:31 PM  
1996 Crew Cab C3500 Dually two wheel drive with a camper shell with only 36,000 miles. Towing a 24' enclosed, best I got was 11 mpg. Average is 9 mpg. Not towing 70-75mph cruise is 13mpg. I baby it when I tow and I use overdrive. Everyone has an opinion about about towing in overdrive. My tow to most tracks is flat.

Dirt Freak

Total posts: 466
posted March 29, 2005 10:51 AM  
u2fast I would change all the plugs,cap rotor fuel filter and check your timing. Also make sure you have a good thermostat cuz if it isn't coming up to operating temp it will use more gas also. I would also make sure that the throttle plates are clean and run some injector cleaner through it.

Dirt Forum Champ
Total posts: 635
posted April 01, 2005 08:56 PM  
Might be the terrain too. There's quite a few people from the midwest on here where you can see your dog run away for a week. In my neck of the woods, you're lucky to get a half mile of level road. My drive to the track is up and down the whole way.

'99 F150 5.4 4wd. I get about 16-17 mpg highway and 14 mpg around town unloaded. With the trailer, maybe 10 at best.

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