SirRobyn0
Full Access Member
- Joined
- Dec 6, 2019
- Posts
- 6,755
- Reaction score
- 11,402
- Location
- In the woods in Western Washington
- First Name
- Rob
- Truck Year
- 1984
- Truck Model
- C20
- Engine Size
- 305
After replacing the vacuum advance in my distributor and rebuilding the carburetor i drove it to and from work for a week and i am happy to report my fuel economy has improved before it would getting 10.5 to 11 and now it is getting 13.9 to 14 mpg so that is a improvement.
Damn I'd kill for 14mpg. Just checked the mileage on my K20 with a long highway drive while actually trying to conserve gas and only got 11 Probably getting 8 around town as I like to stomp it every now and then lol
You must have 4:10's
I think gear ratio, whether you have over drive or not, and your driving habits, and condition of the truck mechanically play a roll in it. I have a trailer that I tow and I'm looking to change the gear ratio in my rear end. Probably to 4.56. Right now I have 3.41 and it's great for freeway mileage I've touched 16MPG, (700R4) and guys give me a hard time when I talk about wanting to get as good a mileage as possible. It'll drop with the change I know but I hope to keep my freeway mileage when empty in the 12 - 14 range. We'll see.