Gas mileage with OD????

6

67chad

New Member

Jan 13, 2006

25

0

2

Apr 20, 2006

#1

• Apr 20, 2006

• #1

I am getting ready to replace my C4 trans with a brand spanking new T-5z. With the gas prices now, it got me thinking what kind of gas mileage I could expect to get. I am getting 13/15 MPG with the C4, 3.50 gears, and a warmed up 289. A lot of you have changed to OD; I would appreciate it if you could let me know what you get. Thanks,

 

Stangboy67

New Member

Aug 26, 2005

59

0

0

Lynnwood, WA

Apr 20, 2006

#2

• Apr 20, 2006

• #2

I've got a 1990 5.0 in my '67 with a Performer intake and Edlbrock 600 cfm carb, T-5 and at the moment 2.79 rear gears. This is good for 23 mpg in the 60-65 mph range.

 

redhotcomet

New Member

Mar 30, 2005

103

0

0

Western Canada

Apr 20, 2006

#3

• Apr 20, 2006

• #3

The combo in my sig gets 20-24 on the highway at 60-70 mph

 

302 coupe

Founding Member

Mar 2, 2000

1,952

3

36

Macon, Ga.

Apr 20, 2006

#4

• Apr 20, 2006

• #4

I used to get about 23-24 in my 66 coupe, with a 300 horse 302 and 3.70 gears.

 

T

ttoney

Member

Sep 12, 2005

195

0

16

Denver

Apr 20, 2006

#5

• Apr 20, 2006

• #5

I am not sure but my best guess is 9 MPG. or GPM!

 

6

66forfun

Member

Feb 25, 2006

260

0

16

Pittsburgh

Apr 20, 2006

#6

• Apr 20, 2006

• #6

you can expect ~25-30% increase if your ez on it although it will be much more fun to punch it in 1st, 2nd & 3rd.

 

6

67chad

New Member

Jan 13, 2006

25

0

2

Apr 20, 2006

#7

• Apr 20, 2006

• #7

I am glad to here such high numbers. I know the way I drive I wouldn't get that kind of mileage . Then again I am getting older maybe it's time I slowed down JK. Thanks,

 

6

65mistress

Member

Aug 17, 2004

405

1

17

Generica USA

Apr 21, 2006

#8

• Apr 21, 2006

• #8

Throw in a 70 gas tank and you can go possibly 400-500 miles on 1 tank.