302 Guys - Whats your MPG?
02-15-2012, 10:06 PM
#11
Gas mileage what is that haha my 92 with 6 inch lift, 35's, 3inch straight pipe from the pre cat back dumps out right before the rear wheels and i think i get 8 in town and 10 hwy if i am lucky, and thats with a fresh tune up including replacing timing chain and all...
I sold a 454 Chevy to get better gas mileage and i'm not sure i'm getting all that much better mileage. Kinda sad. The 454 truck was even carb'ed and had 4.10 gears. I really hope I can get 15 in town and 20 highway - which is what my diesel suburban gets.
Its not looking good based on what you all are telling me, seems 12 mpg or so is the best its gonna get. Not so sure I should waste my money (about $170) tuning it up...if its not going to make much difference...
02-15-2012, 10:08 PM
#12
Senior Member
Originally Posted by Firefighter26
Gas mileage what is that haha my 92 with 6 inch lift, 35's, 3inch straight pipe from the pre cat back dumps out right before the rear wheels and i think i get 8 in town and 10 hwy if i am lucky, and thats with a fresh tune up including replacing timing chain and all...
02-15-2012, 11:08 PM
#14
Mrs. W
my 93 with the E4OD with no cats just dual straight pipes is getting about 16 now close to 18 in the summer. my dads 90 with a 5spd and no cats either gets 18 or so. of course thats mainly highway driving.
02-16-2012, 04:48 AM
#15
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92 Flareside Supercab 302/auto = 16cty/18hwy
Stock Exhaust,9mm Ford Racing Wires,MSD Hotter Coil,cap and Rotor, Autolite Copper core plugs, Timing bump to 14 btdc, K&N drop in filter.
It'll cost ya about 200.00 bucks from Summit Racing but the resulting increase in power and mileage is worth it. I am going to put headers and true duals, more for the look and sound, but I am sure there should be a small gain...hopefully.
Stock Exhaust,9mm Ford Racing Wires,MSD Hotter Coil,cap and Rotor, Autolite Copper core plugs, Timing bump to 14 btdc, K&N drop in filter.
It'll cost ya about 200.00 bucks from Summit Racing but the resulting increase in power and mileage is worth it. I am going to put headers and true duals, more for the look and sound, but I am sure there should be a small gain...hopefully.
02-16-2012, 08:51 AM
#17
Senior Member
I have a 91 with the e4od 4x4 with 3.55 gears. I've done the timing bump. Timing is set a 16° with a msd coil accel wires,cap,and rotor button. Along with true dual glasspacks. During the summer I got between 12&14 mpg winter between 10&12 mpg. Mixed driving on my 8mi trip to work. Mainly 35 MPH to 55 MPH driving.
02-16-2012, 09:26 AM
#18
Senior Member
My 86 very similar to the OP's truck. I get maybe 13 or 14 at best mixed driving.
For those who are running larger than stock tire size:
You will have an error in speedometer and odometer readings, which will give errors in MPG calculations as well. With larger diameter you will be going further than the odometer indicates which means your actual MPG will be better than what you calculate.
In my case I went from stock 235x75x15 to 31x10.5x15. My calculated error is about 7.2% Which means my calculated MPG would be 7.2% lower than actual.
Here is an on-line calculator. Enter your stock size from your door sticker.
http://www.1010tires.com/TireSizeCal...?action=submit
In theory even replacing worn tires with the same brand, model, and size will give you an apparent increase in MPG.
For those who are running larger than stock tire size:
You will have an error in speedometer and odometer readings, which will give errors in MPG calculations as well. With larger diameter you will be going further than the odometer indicates which means your actual MPG will be better than what you calculate.
In my case I went from stock 235x75x15 to 31x10.5x15. My calculated error is about 7.2% Which means my calculated MPG would be 7.2% lower than actual.
Here is an on-line calculator. Enter your stock size from your door sticker.
http://www.1010tires.com/TireSizeCal...?action=submit
In theory even replacing worn tires with the same brand, model, and size will give you an apparent increase in MPG.
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Xarmy (04-03-2021)
02-16-2012, 11:07 AM
#19
Mechanicalmike08
My 86 very similar to the OP's truck. I get maybe 13 or 14 at best mixed driving.
For those who are running larger than stock tire size:
You will have an error in speedometer and odometer readings, which will give errors in MPG calculations as well. With larger diameter you will be going further than the odometer indicates which means your actual MPG will be better than what you calculate.
In my case I went from stock 235x75x15 to 31x10.5x15. My calculated error is about 7.2% Which means my calculated MPG would be 7.2% lower than actual.
Here is an on-line calculator. Enter your stock size from your door sticker.
http://www.1010tires.com/TireSizeCal...?action=submit
In theory even replacing worn tires with the same brand, model, and size will give you an apparent increase in MPG.
For those who are running larger than stock tire size:
You will have an error in speedometer and odometer readings, which will give errors in MPG calculations as well. With larger diameter you will be going further than the odometer indicates which means your actual MPG will be better than what you calculate.
In my case I went from stock 235x75x15 to 31x10.5x15. My calculated error is about 7.2% Which means my calculated MPG would be 7.2% lower than actual.
Here is an on-line calculator. Enter your stock size from your door sticker.
http://www.1010tires.com/TireSizeCal...?action=submit
In theory even replacing worn tires with the same brand, model, and size will give you an apparent increase in MPG.
