Hi all...

What sort of mileage do you guy with v8's get? I did a search, but I only found it on the V6 boards... My gas mileage is not too good, especially with these crazy gas prices...
What are you guys getting, and what should it be getting?

 

I get 25-30mpg highway. at an avg speed of 65-70

 

16-18 mpg stop and go.

 

This is what I thought.. So why am I getting about 14 on a good day? Yukon SUVs get better...

 

wow reading that makes me nervious, im getting 9 mpg stop and go and im talking normal driving conditions - 2000 to 2500 RPM gear shifts, I have an 84 L69 that is timed and tuned properly.

 

comparing stop and go mileage is pointless. Way too many variables involved with city type traffic to get anything out of comparing your numbers with someone elses. One person's stop and go 3 second traffic light stops is another person's 30 minute 4 mile trek in a traffic jam every day. Stick to comparing only highway.

 

its hard to compare highway because I am never on the highway for full tank, and the stock gauge is not that accurate where i can judge that a half tank is actually a half tank because from full to half and from half to empty are two totally different things.

 

Regardless of the methods one might use to determine fuel mileage, and comparisons of "city" versus "highway" driving, best fuel mileage can be assured if you properly maintain your vehicle.

Aside from the widely understood items like tire inflation, brake inspection, alignment, and efficient driving practices, there are some less obvious items that can affect overall mileage. Lubricant selection, effective evaporative controls, avoiding A/C use, maintaining the air filter, having an active oxygen sensor, using a lower octane fuel, reducing weight in your vehicle, and keeping the coolant warmer can all improve mileage. There are a lot of easy things that can be done to improve mileage.

Even highly modified engines can be fairly efficient if a little thought is applied. High performance engines are high performance because they squeeze every last bit of power out of a fuel/air charge. If that's the case, a lower fuel/air charge (from lower throttle openings) should result in adequate power to keep the vehicle moving at a given speed. That results in greater mileage compared to a lower performance engine. Unfortunately, all too many enthusiasts think only of WOT operation when building, and give little thought to part throttle operation, which is where a street vehicle gets 99% of its use.