gas mileage
Burning Brakes
Joined: Mar 2010
Posts: 987
Likes: 7
From: Surrey British Columbia
Got a Christmas card from the guy that owns the local gas station down the street. He heard my '80 will be back on the road soon. In it he said "I'll be seeing you again, and again, and again, and again...."
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,601
Likes: 7,048
From: New Or-leens Loo-z-anna
Blame.............pay no attention to the man behind the curtain.
EDIT: OOOOOOOOOOOOOPS.....bashcraft---I apologize---I just looked at your username----"It's what you do in life!"
And you do it well, I might add.
Last edited by doorgunner; Jan 21, 2014 at 05:09 PM.
Thread Starter
Pro
Joined: Jul 2010
Posts: 545
Likes: 0
From: Jacksonville Fl
I got to the pumps once a week. But on avg I drive 250-350 miles a week. Im a armed guard and a on call one at that. There be times ill drive 75 miles round trips to one post. Others 20 round trip.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,601
Likes: 7,048
From: New Or-leens Loo-z-anna
Burning Brakes
Joined: Aug 2009
Posts: 1,037
Likes: 103
From: Brisbane Queensland
20mpg from my 69 L46 4 speed 3.70 rear, 600 holley vac secondaries,
no air, no ps on long trips. Never bothered to check around town.
My daily is a 2011 Grand Cherokee 3lt diesel and just averaged 30mpg
on a trip from Brisbane to Sydney with 2 weeks running around and return.
no air, no ps on long trips. Never bothered to check around town.
My daily is a 2011 Grand Cherokee 3lt diesel and just averaged 30mpg
on a trip from Brisbane to Sydney with 2 weeks running around and return.
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
'74 smallblock, Muncie and 3.36 gearset.
I usually drive at about 65 to 70 mph on the highway, so about 2800 to 3000 rpm cruise.
Only about 13 to 15 mpg. Ugh.
Just leaned out the cruising A/F ratio. So I'll see what it does on the next tank.
I usually drive at about 65 to 70 mph on the highway, so about 2800 to 3000 rpm cruise.
Only about 13 to 15 mpg. Ugh.
Just leaned out the cruising A/F ratio. So I'll see what it does on the next tank.
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Pro
Joined: Oct 2009
Posts: 523
Likes: 4
From: Calgary Alberta
My 77 with the 427 Dart SHP - SBC doesn't get very good gas mileage with a 4 spd and 3.70 gears. Lots of smiles though. 
I am looking to install a 5spd or 6spd which will give good performance in the first 4 gears but will give decent (hopefully 20mpg) gas mileage in 5th or 6th on the highway.
I am looking to install a 5spd or 6spd which will give good performance in the first 4 gears but will give decent (hopefully 20mpg) gas mileage in 5th or 6th on the highway.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
My 77 in stock form got 16 mpg at best.
After side pipe install, carb rebuild, electric fan install and 2400 stall torque converter it got 22 mpg.
Now it has 270 duration cam on a 108 LSA with Dart SHP heads and 9.9:1 CR and gets 19 MPG.
All of these numbers are with a TH350 auto 3.08 rear, A/C running and power steering.
After side pipe install, carb rebuild, electric fan install and 2400 stall torque converter it got 22 mpg.
Now it has 270 duration cam on a 108 LSA with Dart SHP heads and 9.9:1 CR and gets 19 MPG.
All of these numbers are with a TH350 auto 3.08 rear, A/C running and power steering.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,601
Likes: 7,048
From: New Or-leens Loo-z-anna
Safety Car
Joined: Sep 2013
Posts: 4,355
Likes: 2,633
From: Draper Utah
Gosh... half the fun of driving a classic is pulling into a gas station, popping the hood to check the oil, and watching the crowd gather to admire your beast.
With that said, I've never bothered to check my mileage, but I know it's not good because my foot is often buried in the quadra-toilet well into the fun factor.
With that said, I've never bothered to check my mileage, but I know it's not good because my foot is often buried in the quadra-toilet well into the fun factor.
Pro
Joined: Oct 2013
Posts: 557
Likes: 3
From: El Sobrante CA
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
.....7-8
7-8 mpg ,,,427. L-88 , 4.11...... At freeway speeds I swear I saw the fuel gauge move to E. The principal reason it only has 28,000 miles on the odometer, plus the fact the 5 year warrantee ran out in 1973.....
back then
today...or 46 years later
back then
today...or 46 years later
Thread Starter
Pro
Joined: Jul 2010
Posts: 545
Likes: 0
From: Jacksonville Fl
What yellow is that? And who need a lead foot when you got a old school big block lol.
Le Mans Master
Joined: Aug 2010
Posts: 5,339
Likes: 546
From: Central Texas