Q: Improving MPG on a '93 Chevy G30

asked by on

I have a 1993 Chevy G30 with 4 54 CI 7.4 Liter V8. How can I improve my miles per gallon besides change my driving habits and tire pressure?

This car is known to be a gas hog. You’ve got a big block Chevy V8 and it’s an old one, so it has a basic, really old-fashioned fuel injection system that doesn’t work all that well. There’s really nothing you can do to make it get a better gas mileage. You could swap to a more modern fuel injection system but this wouldn’t change much, maybe one or two miles per gallon, while costing you thousands of dollars to do it.

Just basically keep air in the tires, keep the oil clean in the air filter, and drive conservatively. That is the only way you can get it to be half-way decent. And of course, the more you drive on the highway, the better gas mileage you are going to get. Because you are getting better gas mileage when you are going 50 mph than when you when you are stopping and going at 30 mph. So, whenever possible, drive where the speed limits are higher and there are no stop signs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Improving MPG on a '93 Chevy G30

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Problem starting after fueling have to give it to start

Hello. All modern cars are equipped with an Evaporative Emission Control (EVAP) system. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system collects and temporarily stores the fuel vapors in the...

Q: Which caliper do I replace when my car pulls to the left? 2005 Chevrolet Malibu

Hello - if your vehicle pulls to the either side while driving, it is not likely a brake problem (although possibly a dragging left side caliper in your case). More than likely, low tire pressure of the left, front tire,...

Q: No Start. Fuel delivery issue

Hi there, thanks for writing in about your 1993 Toyota Pickup. You should check all the relay connections to see if the wire connections are corroded and losing relay connections to the relays. This vehicle is known to get badly...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...