Better gas mileage and performance.

618 Syndicate · May 29, 2023

WECSOG said:
That would save about $1200/year at an average price per gallon of $3.50. Now take insurance and registration for the little car out of that and you're left with what, $700 a year savings? So it would take 5 years just to break even on a cheap, $3500 car. Minus any repairs that cheap car needs in 5 years.
You could buy a better car. Say $7000. Then it will take 10 years to break even, if nothing goes wrong.

I don't consider a $3500 car cheap, but that's just me. And of course he could spend 7k on a better car but that's not the point. You can buy a dead reliable but ugly as sin 30 year old Honda, Toyota or whatever for a grand. The stereotypical beater with a heater. That's what I mean by shìtbox.
Any repairs are a push, because his truck is just as likely to need repairs over a given period of time. Liability insurance is stupid cheap on a car like that, so that expense would be negligible.
Point being that trying to make one of these trucks into an economy car is an exercise in futility, there are better ways to achieve that goal, even keeping a truck that has sentimental value.

fancyTBI · May 29, 2023

5.7, 5-speed, 3.08 gears, RCLB C1500.
About 18MPG lifetime average since I started tracking it. Drive like there is an egg under the gas pedal and you can get decent fuel economy. Having a manual transmission helps, too! Since keeping track of mileage I have been much more cognizant of my driving style. You can also track your driving style, average cost, etc.

The tank with 19.67MPG is my best ever with the 5.7. But, to be honest, that tank has some decent pulls and higher RPM shifts as well as some 75+ mph driving. Definitely not a lot of egg-under-pedal driving style there.

When it was a 4.3, I would get 23/24. Sometimes I wish I had another 4.3 truck for running to town. They have their place.

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HotWheelsBurban · May 29, 2023

I think you have to have a few times per tank, where you "blow the cobwebs out". My trucks are happier when we do that....

alpinecrick · May 29, 2023

Caman96 said:
Pick up your ball and go home!

Absolutely!

alpinecrick · May 29, 2023

91 K2500, 5.7, 5spd, 3.73's, LT245's. Bought it in the spring of 92 with 9k on the odemeter (it was the dealer's personal demo truck). Driving it semi nicely, at altitudes ranging from 6k to 11K plus, the best I ever did was 19+ mpg--that's with mid-grade gas. More so, with mid grade the truck went further up the pass before I had to start downshifting--every GM cast iron fuelie V8 I've owned since then has done better with mid grade.

PM18S4 · May 29, 2023

1999 K1500 Suburban 5.7L, 3.73 on P245/75R16 Tires. Lost all milage data prior to 2013 at 151k miles. 10 years and 60k miles later and I have tracked every fill-up.
Best: 21.5 [mpg] (Downhill, interstate, tailwind)
Worst: 10.9 [mpg] (Winter, city, trailer and lots of idling)
Average: 13.9±2.2 [mpg]
While I can't do an R_ chart with LCL and UCL because my city/highway driving is so variable, I have notices a slow decline in mpg.

2drXmobb · May 29, 2023

fancyTBI said:
5.7, 5-speed, 3.08 gears, RCLB C1500.
About 18MPG lifetime average since I started tracking it. Drive like there is an egg under the gas pedal and you can get decent fuel economy. Having a manual transmission helps, too! Since keeping track of mileage I have been much more cognizant of my driving style. You can also track your driving style, average cost, etc.

The tank with 19.67MPG is my best ever with the 5.7. But, to be honest, that tank has some decent pulls and higher RPM shifts as well as some 75+ mph driving. Definitely not a lot of egg-under-pedal driving style there.

When it was a 4.3, I would get 23/24. Sometimes I wish I had another 4.3 truck for running to town. They have their place.

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I used to follow a forum I forgot what it was called econo fuel or something like that where people wanted to maximize their mpg. Some people teach you techniques of coasting and aerodynamic mods. Its pretty fun when you try to be more aware and have set goals on trying to achieve better fuel mileage. But the best I did on these trucks was about 14 mpg. I was getting worse fuel when I had a vacuum leak and exhaust leak. Took me about a year and a hole in my pocket to figure out the problem. I think fuelly . Com the average is about 14 mpg. If your getting anything higher then that your doing a pretty good job.

Caman96 · May 29, 2023

Sitting in a Prius 5’ behind a tractor trailer’s just not my thing.

1989GMCSIERRA · May 29, 2023

Run stock size tires, drive normally and accelerate slowly. Take off crap in your car that’s not needed. I.E tire chains in summer. Tow chains for off road when yiure 98% on street.
If you have crap hanging off the truck off road lights winches roll bars and off road lights remove all that clean up the aerodynamics. If you removed the front airdam put it back on.
Keep tires aired up And make sure the alignment is good. Make sure brakes are adjusted right and not dragging.

NCchris · May 29, 2023

Caman96 said:
You gotta say more than just 93 Silverado. What motor, what transmission?

Sorry, in my sig, 5.7, 700 R4

Better gas mileage and performance.

618 Syndicate

You won't...

fancyTBI

Some of my trucks run and drive

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!

alpinecrick

I'm Awesome

alpinecrick

I'm Awesome

PM18S4

Supporting Member

2drXmobb

I'm Awesome

Caman96

OEM Baby!

1989GMCSIERRA

I'm Awesome

NCchris

Newbie

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