mileage on 454 Vortec chevy dually

[cyclone]

just got back from the river and got about 10.5 mpg towing my 19-foot Ultra. What do you guys get when towing and not towing.

[Beer-30]

just got back from the river and got about 10.5 mpg towing my 19-foot Ultra. What do you guys get when towing and not towing.
Nice! I get about 8.5 towing and 11.5 empty / tailgate down / 80.
AIRAID intake, Edelbrock headers, dual 3" exh, MSD wires, synthetic lubes. 1998 / 67K miles.

[HocusPocus]

with my 89 chevy dually with a with an aftermarket throttle body injection towing a 19' open bow, i got what you got. thats at 60 mph.
97 dodge dually, cummings, 4x, extra cab i got 18 mpg at 60 mph towing a 20' open bow.
with my 05 dodge hemi quad cab, 1/2 ton, 4x, towing a 23' boat i got 13.3 if i remember right. (less then 4000 miles on the truck i hear it may get better?) thats at 62 mph.
all the seats are filled with the me the wife and 4 kids (4, 6, 10, 15) and of course all the usual gear it takes to spend a week at havasu.

[Beer-30]

Pulling a 21' Malibu (before I had mine) with 4-6 inside, usual gear, 75-80, 8.5
I still seem to get about the same. I don't really check it any more. I didn't buy it for the mileage it gets, I got it cause it gets the job done. :cool:

[cyclone]

I just had the heads ported, new roller cam, new cat back exhaust put on my 454. Was curious as to how the mph compared to others. I havent run a full tank through it yet without the boat in tow to see how well it does. I'll post back after the weekend when i fill it up again.

[Beer-30]

I just had the heads ported, new roller cam, new cat back exhaust put on my 454. Was curious as to how the mph compared to others. I havent run a full tank through it yet without the boat in tow to see how well it does. I'll post back after the weekend when i fill it up again.
Wow, good for you! Screw the mileage, how much better does it run? Did you up the valve size also?

[lucky]

95 TAHOE WITH A 21 FOOT HOWARD RIGHT AT 12MPG OR APROX. .25 PER MILE :jawdrop: SO NEXT TIME YOU SEE A QUARTER IN IN THE PARKING LOT BETTER PICK THAT SHIT UP

[cyclone]

Wow, good for you! Screw the mileage, how much better does it run? Did you up the valve size also?
Valves went up from 2.060 to 2.190. You can read about it in the october issue of Sport Truck Magazine. There's an article in there about the head porting.
It runs hard now. Tows like a champ. I towed to the river and back at about 70 mph and the tranny hardly ever shifted even up the grades

[Beer-30]

Valves went up from 2.060 to 2.190. You can read about it in the october issue of Sport Truck Magazine. There's an article in there about the head porting.
It runs hard now. Tows like a champ. I towed to the river and back at about 70 mph and the tranny hardly ever shifted even up the grades
Cool. I'll pick it up. Good job!

[Danhercules]

It runs hard now. Tows like a champ. I towed to the river and back at about 70 mph and the tranny hardly ever shifted even up the grades
70 my ass! I was trying to catch you after the wreck and I was doin 80+. :hammerhea
I launched Mike at the CBBB, and that truck sounds nice, jumpy too, tap the throttle and it chirps the tires. I wanted to do one of them burn out contest deals on the ramp, Mike would not let me! :frown:

[cyclone]

oh yeah i forgot about that. i was thinking of the trip home where i really did only go 70 mph. friday night i was in a hurry to hurt myself at the bar. mission accomplished!
tires are spendy. no burnouts there weatherman! :boxed:

[Raskal]

how much more power dose that motor have over the 6.0 .buy the way i get 10/11 towing or not .dose not really change much

[cyclone]

not sure how much power yet. will be going on the chassis dyno this week after another appointment the tuner. Its got an off-idle stumble we are trying to eliminate before dyno testing. Other than that it runs great.

[DansBlown73Nordic]

I have a 98 GMC Dually with a 350 Vortec. I have gotten 14 on a trip. I got 12-13 towing my 19ft Nordic.

[cyclone]

Stuck in traffic all week long and not towing the boat=10.5 mpg.
same as towing the boat on the open highway. hopefully i'll get some open highway this week and see if there's a difference.

[Raskal]

lets see some pics .with the 19'' wheels its got to look bad ass

[98 Vector 21]

Ouch....