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**cwcarpenter98** · 11-19-2019, 03:37 PM

Of course, the trip to Augusta burned over 3/4 of the tank, so I had to fill up today. Now that I have a working odometer, I was able to easily calculate my MPGs.

I drove an indicated 215.7 miles from full tank to fill up. Frankentruck drank 15.03 gallons this go around, so that puts me at a solid 14.4 mpg.
But, my speedo runs about 10% slow (To fix, I would need to pull the overdrive unit off the back of the trans and swap out the drive gear so it would mesh up with the correct driven gear).
The adjusted miles driven is 237.3. Divide by 15.03 and get 15.8 mpg

11-19-2019, 03:37 PM	#353
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,425	Re: Frankentruck Of course, the trip to Augusta burned over 3/4 of the tank, so I had to fill up today. Now that I have a working odometer, I was able to easily calculate my MPGs. I drove an indicated 215.7 miles from full tank to fill up. Frankentruck drank 15.03 gallons this go around, so that puts me at a solid 14.4 mpg. But, my speedo runs about 10% slow (To fix, I would need to pull the overdrive unit off the back of the trans and swap out the drive gear so it would mesh up with the correct driven gear). The adjusted miles driven is 237.3. Divide by 15.03 and get 15.8 mpg __________________ Christian Carpenter 1963 C10 - Frankentruck 283, 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson