Your MPG? Best?
Postmaster
Joined: Apr 2004
Posts: 3,005
Likes: 2
From: Santa Clarita
I'm running a 289/ C4 tranny. The engine was built by me. I'm running headers, a cam, larger valves, an intake, Edelbrock 600 carb. I took a ride on the freeway and got 24 mpg. City I get about 20. That's with 2.75 gears in the rear. When I was running 3.5 gears, I got about 14 mpg. When I first rebuilt the engine, it was dyno'd at 281 horsepower @6000 rpm and 320 ft pd of torque. I don't have the horsepower of the big blocks, but have enough to make people turn their heads.
Last edited by imlowr2; Nov 28, 2007 at 11:09 AM.
Postmaster
Joined: Sep 2005
Posts: 2,958
Likes: 1
I have only checked mine once. I keep forgetting to write down the miles when I fill up.
The truck: 56 F-100, 272 Y-block, holly 2100 (2 barrel), 3 speed (on column), 3.73 gears.
Mileage: 15.53 MPG on 181 mile road trip.
The road was long hills, cruves, and in town traffic in Branson, MO.
The truck: 56 F-100, 272 Y-block, holly 2100 (2 barrel), 3 speed (on column), 3.73 gears.
Mileage: 15.53 MPG on 181 mile road trip.
The road was long hills, cruves, and in town traffic in Branson, MO.
Elder User
Joined: May 2007
Posts: 766
Likes: 6
From: south Fl.
I drove 175 miles each way to the Turkey Rod Run this past holiday weekend and got 16 mpg with the olds motored 55 f-100. We ran 80 ~ 85 mph. 307ci, O/D automatic, 2:56 rear gear.
Rick
Rick
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Fleet Mechanic
Joined: May 2006
Posts: 1,696
Likes: 1
From: S.W. Florida
I got chastised on this same subject in a thread last year, but I'll say again my '79 351 W smog motor,stock save for Edelbrock Performer intake and carb prolly gets 10-11 mpg. 3.00 rear and frame mounted tank, not sure of the size, but It MUST be small, cuz once it starts dropping, it drops like a rock. I confess I have not as yet measured the milage.
Post Fiend
Joined: Mar 2007
Posts: 5,776
Likes: 2
From: springfield il
truxx not to beat a dead horse but plenty of power ? with a 305 chubby ? man we used 'em as boat anchors as thats pretty much what they are . even stuck one in one of the bomber dirt cars when the 400 said adios . hades the one front driver at the time with a v-6 bonneville lapped me . it was embariskin !!!!!! the one i had in an 79 caprice got crappy mileage , and it was a well taken care of car it was my grandparents ol' car . it got a measly 12 in town and about 18 on the road . 
Postmaster
Joined: Apr 2004
Posts: 3,005
Likes: 2
From: Santa Clarita
Originally Posted by 56f600
6. Not 10.6 Not 18.6 6.00 is all I get. 360 4spd. 8000lb flatbed. At the current price of gas, it costs me .57 per mile to turn the wheels. I try not to think about it.
And our gas prices aren't as high as some other places. Geez! that's painful! I drive 14 miles one way to work, that mean if I used your truck to go to and from work it would cost me, $15.96 a day just to go to work, I'm not stopping to get a bite to eat either. 
Last edited by imlowr2; Nov 29, 2007 at 06:06 PM.
Postmaster
Joined: Sep 2005
Posts: 2,958
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Originally Posted by imlowr2
At least not the equation you worked it out to be and put down. .57 cents a mile? A mile isn't that far? And our gas prices aren't as high as some other places. Geez! that's painful! I drive 14 miles one way to work, that mean if I used your truck to go to and from work it would cost me, $15.96 a day just to go to work, I'm not stopping to get a bite to eat either.
And our gas prices aren't as high as some other places. Geez! that's painful! I drive 14 miles one way to work, that mean if I used your truck to go to and from work it would cost me, $15.96 a day just to go to work, I'm not stopping to get a bite to eat either. 
Tuned
Joined: Dec 2001
Posts: 431
Likes: 4
From: renfrew canada
i hadda old pontiac parisienne kickin round here about the time my 223 was givvin up the ghost(257,000 miles) so i stuck this 305/ 700r-4 combo,in my 58 panel with 9inch 3.50 rear gear and the tranny lockup wire not connected, slid an economy cam in, and one of the guys @ work jetted the quadrajet carb down for me.
on straight hi-way runs i can get 30mpg easy, with still lotsa gettupn'go when i gotsta pass somethin' but lookout when those 4bbls open then ya can see the gas needle go down......ain't real good pokin around town either.
someday i'd like to hook up the lockup wire, apperantly there is a kit out there to do it. but kits cost $$ & i aint got none of that right now to spare.
mikie
near ottawa canada
58 m 100 panel, 64 econo p/u
on straight hi-way runs i can get 30mpg easy, with still lotsa gettupn'go when i gotsta pass somethin' but lookout when those 4bbls open then ya can see the gas needle go down......ain't real good pokin around town either.
someday i'd like to hook up the lockup wire, apperantly there is a kit out there to do it. but kits cost $$ & i aint got none of that right now to spare.
mikie
near ottawa canada
58 m 100 panel, 64 econo p/u