Torque -vs- cubic inch
Mileage -vs- cubic inch
Shoe size -vs- mileage

Easy answer how big of a shoe do you have ?
7 -vs-15 mpg
10 -vs- 6 mpg

Now determine if this is a grocery getter that the wife is going to drive size 7 shoe = 15 mpg

Rusthater drives to the local parts store and smokes the tires out of the parking lot in front of a 69 Chevy short box big block truck shoe size 10 = 6 mpg

Sorry Rusthater I had to throw that one in there .There is not a good equation it just depends on what you are building.Give us a little more information and we will try and give you some good advise.Welcome to the Stovebolt Forum


In the works 2006 GEN III 6.0 /4L80E/ 205 New process,A/C and power brakes .