12 Valve Fuel Economy
 

Im looking into getting a 12 Valve. it will have stock suspension and will be 4 wheel drive

say i get a regular cab, regular bed, manuel tranny, strait pipe exuast(thinkin 4 or 5 Inch),

BHAF, aftermarket intake manifold, maybe say 40HP injectors because i hear they are more

efficent than stockers and maybe a fuel plate one step down from the stocker. if i get a

truck just like this what fuel economy should i expect.i dont really want to lower the axle

ratio but if they makes a huge difference might think about. any other suggestions on a way to get better feel economy is always appreciated.:U:

I've got a 94, 5 speed, 3.73 rear, 4"exhaust, big filter. I get 22-24mpg at hwy speed of 55-60. On the interstate at 70-75, it gets19.
Oh ya, it's for sale too:)

with all my mods and 35" tires with a 4" lift im at 21-23mpg hyway and 19-21 city, winter sucks becasue of warm up time here so im down to about 13-16 with all the idle time

If my star wheel is cranked and im playing hard ill get 15-16 mpg Just running around random driving 17-18 mpg and highway at 70 mph ill get around 20 mpg.

My 97 on the way i home i got 25 mpg. I never got that again. but i would regularly get 21-22 on the highway with it.

Mild injectors should help you and if its an auto a nice converter will help alot as well.

i have 265 tires, 5-speed, fuel plate #10, replacement filter. I get 18-20 in town and 25ish in the high way.

With the 35's, I get about 16 around town, 20-22 on the highway, and thats a 4x4 with a Ranch Hand bumper. Just got 23.2 round trip going to Syracuse and back, I was real happy. I also have a clutch fan, which helps a lot, I only turn it on if I'm idling for a while or if I'm in bad traffic.

I get 20-22 sometimes if I can keep my foot out of it I get 22-24

With what i've done to my truck i get around 17/19 city,and around 22/24 on the highway unless i'm really romping on the go fast pedal.Another thing you can do if you get the truck is put some fuel conditioner in the tank every other fillup.I've noticed that also helps my fuel economy.

thanks guys. i just need the money and i will hopefully be the owner of a new truck

12v in 97 Ford F-350
 

I have a 1997 Cummins 12v in a 1997 Ford F-350 4x4 with a 6 speed manual transmission. I went from getting 9-12 MPG with the 460 V-8 to getting 20-24 MPG with the 12v.

I pull a custom made 5th wheel (48' Long... 24' with bunks for a boat and 24' up front with a custom made Lance Camper to fit the style of the trailer). I can pull the fifth wheel fully loaded (about 10,000 pounds gross) 65-70 MPH and get about 19-20 MPG.

Before with the 460 I got 6 MPG and Could not even pull the dang thing.

Cummins All The Way! :jump:

Ford 460 = :td:
Cummins 12v = :tu:

i get 15 mpg. no joke. but i drive fairly "casual".

How about pics of your truck ? We like conversion pics:jump::jump:

The best I got was 18 on 37s with 5 speed, 373s, and it tuned stock, I'd average around 14. I haven't checked it lately since I hardly drive it but I believe I'm getting around 12-14. Could be closer to 10 though.

how about pics of the 5th wheel?

I have mine turned up just a bit and even though it's 2wd I get about 17-19 city and 22 at least on the highway

woo hoo and im the guy that gets 15 on the highway... but i might have more fuel then a lot of guys on here....

oh and this might help it too

this is my exhaust at 3k rpms lol

Attachment 45312

i have a high hp 12v with 373 gears and get 21 mpg or so

my old straight six gasser ford got about 16-17 avg, just finished my swap and filled up for the first time last weekend, when I go back home this weekend I'm gonna run that tank out and fill back up. I tried to be a little easier on this tank but its hard when its that much fun ;)

F150, 2wd, and 3.55 gears with 30 inch tires.... what do yall think I will get? got my fingers crossed!!

I only get 15 driving easy ! With a two wheel drive auto. Any suggestions ??????

i get 14-15 in town 16-17 on the highway before the new trubo idk what i get now i blew my tranny asap with the new turbo

if i granny it on the high way ive gotten 25, about 12 mixed city and highway, the worst ive gotten was 6 lol

6mpg? must have run it pretty hard to get that lol

I havent got mine below 20, even the tank after I got my stack put in, and I had a really heavy foot the whole time, I got right at 21.

stock 12v with 4" lift 35X12.5 tires, long bed, ex cab with shell, 20-25 hwy @ 2k RPM'S =63 mph

Best I have got is 19 and the worst it 14.

I just ordered and M4 fuel pin from M&H inc and im super stoked should be ariving tomorrow how will this fuel pin effect my MPG i have a 1991 dodge D 350 automatic non-intercooled

Keep your foot out of it and you wont see any difference. Its all driving habits.

I'm getting a #8 fuel plate. Can someone tell me how to set it up ?

ive gotten 20 on highway and worst was 9ish going 95 across idaho in bad headwinds... fuel gauge is broken i usually just fill up every 3-400 miles i went 330 miles on 35 gallons of diesel standing in -15 with a sign asking got diesel? finally just filled it up with tranny/engine oil and it got me to the nearest diesel station

economy
 

Hi, i saw where used trany oil to get where you needed to get,back about 30yrs ago i put a
4 cly. nissan diesel in a 74 vega and ran out of fuel and what i used was motor&gas mix for a
chain saw to get home,my sister thought it wasa good idea to put gas in it one day did not
run very well drained tank,put diesel ran for yrs. no problems,not a good idea but it works.

worst i have gotten was a parade lap at jambo.... one lap about one mile and used 17 gallons of fuel... heheheh

DEAR god! You have that thing runnin yet?

DEAR GOD is right :scare2:

How'd you get that much mpg? My 97 cummins 3500 only gets about 16 on average

Some outrageous numbers. Be nice to know there set up. I'd like to get 18 in town.

Good greatious ..... how do you get 6mpg ? ... never seen a CTD get that bad except in a semi or a bus ..... what r u pulling ? :s: