Yep guess that new Stroker is broken in WELL now! :yesnod:

With my OEM 350, my gas mileage was 10 on a good day and 10 on a bad one. Since the heart transplant in the car I've checked it now and then but not often. NOw she has about 4,000 miles on her.

When I filled up for our cruise last weekend (visit
http://forums.corvetteforum.com/zerothread?id=547475) I figured I'd record mileage to see how it went. Yesterday on the way to work I used up the last of that tank and figured the mileage.

I got well over 13MPG!! :flag In fact closer to 14 and I am just amazed.

Hmm, guess that means that I didn't choose a hot enough cam when I built this thing :nono: :steering:

 

Congratulations. Mine varies a LOT. Last year I'd fill her up every 100 miles and she'd take 5 gallons exactly. 20mpg 'Course, that was during the break in and I was driving... gently. Since then I've changed the timing (backed it down a bit) and find myself in 15 territory when driven gently. Driven normally 13. Being naughty... well let's just leave it at "single digits." :lol:

 

I have driven both of my 73's on a major trip (Austin TX to Bloomington Gold) and both got right at 13mpg. One is an L82 auto with 3:55 gears and it averaged 12.9. The other is an LS4 4-speed with 3:08 gears and it averaged 13.1. :D The big block did better then the small block :thumbs:

By the way, my 90 L98 auto, on the same trip, got 25.4 mpg :yesnod: :yesnod: Then o/d transmissions are great :D

tom...

 

Hoping to get into the 20's with tpi and 5 speed in the vette. I get about about 15 in my Formula but I can't keep the foot off the go fast pedal.

 

I wish I go that, I am getting right now about 10 miles per gallon, with no horse play with horse play I get about 7 miles per gallon. I can practically watch the gas gauge go down :auto:

 

I average 16-10 depending on the go fast pedal action. unsure to tell since I only drive for fun. It's easier just to have a chevron truck follow me everywhere I go. BTW I can only fit 11.3 gallons in the tank, WTF over??!!!

 

Cali, you must have the rare 11.3 gallon tank, you could sell it on ebay and get rich. :jester :lol:

 

When I had the TH350 in, 10 mpg was the norm. After the 700R4 install, about 17 avg.... Probably gets more on the highway. 3.55 gears

 

That's good news when you find out better performance also equals better mpg. I agree....repeat after me.... more cam, more cam, more cam.

 

wow, that's good! i don't know what's up, but my 81 averages 10 mpg. sometimes 11 and that's driving easy. i've seen the one digits many times. i guess the previous owner getting rid of the computer controlled q-jet killed the gas mileage for the car :confused:

 

:lol: :lol: :lol: :lol:

It has an over active bladder, come to think of it so do I.

:lolg:

 

I remain amazed at all the Vette owners who get such horrible mileage. I would probably get about 4mpg driving hard at the track, I do get around 9-10mpg if I do a lot of stop and go driving, but I get 14-15mpg with steady highway cruise. This is with a 427 L88! My69 L46 4 speed, 3.36:1 gears got 22+mpg consistantly on highway cruise. My 79 L82 automatic w/ 3.55:1 gears only got 17mpg on the highway.

Are you guys only driving a few miles before shutting down? An engine runs very rich until it warms up. I think many of you would really benefit from some chassis dyno time with an O2 sensor welded into your collector to measure mixture at part throttle operation. I think you are running way too rich or your ignition timing at cruise speed is way off.

My family made numerous trips from Chicago to Florida or Colorado when I was a kid in the 60's and early 70's. Whether it was in my Dad's 472cid Cadillac DeVille or Mom's 400cid Pontiac station wagon, 18mpg at 75-80mph was standard mileage cruising the 1000 miles between Chicago and Denver on I80. There are only a couple reason a lighter, more streamlined small block Corvette shouldn't do considerably better: Needs a tune-up, high numerical gears, choke is stuck, or riding the brake. I know it can't be your driving! :D

Chuck

 

I get anywhere from 8-14, not too bad, I think- for 460 cubic inches, a 4speed and 3.70's

 

:iagree:

 

Either you have a ford big block in that thing. or you missed typed it. try 454.... :lol:

BTW, I usually get over 20 mpg out of my 82...Hmmm Crossfire fuel injection with a 700R4 isn't so bad after all


[Modified by Desertdawg, 12:12 AM 5/1/2003]

 

Are you guys only driving a few miles before shutting down? An engine runs very rich until it warms up

You are correct about that. I try NOT to drive the Vette on short trips though. And there will be fewer and fewer of them now, since I just changed jobs. I'm now working up the freeway 20 miles so it is a GREAT run each way.

 

My ZZ4 gets 16 to 18 when I stay out of the fun pedal. It drops down to 10 to 12 with the fun pedal engaged. The last time I checked it was on a trip from the North Carolina coast to Northern Virginia and I got 18 MPH on the highway. :hurray: I can live with it.

 

My ZZ4 gets 16 to 18 when I stay out of the fun pedal. It drops down to 10 to 12 with the fun pedal engaged. The last time I checked it was on a trip from the North Carolina coast to Northern Virginia and I got 18 MPH on the highway. I can live with it.


"live with it??" Hell, I would be overjoyed and Stereophonically Amplified!!! What transmission and gears do ya have?? I'm running Turbo 350 and 3:08 gears.

 

I have an M20 4 speed and 3.36 gears.

 

Dawg, I got 23+ @ 75 MPH, T-tops off, A/C on 'high' during the only 'real' trip I've had my '82 on (240+ miles, round-trip) since I got it! if I'da had the tops on, the A/C off, and not driven over the mountains, maybe I'da gotten 25 MPG? My 12-second Z28 (355", THM400, 8"/4500 RPM converter, 4.56:1 gears), on the other hand, gets 'about 2 MPG, or 1 run per gallon.....