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Author Topic: V8TV Spring 2010 Road Trip Contest #3 - Guess The MPG  (Read 9297 times)
Kevin O
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« on: May 21, 2010, 09:00:24 AM »

V8TV Spring 2010 Road Trip #3 - Guess The MPG!

We've gone 2800 miles in our '62 Ford Galaxie on our latest road trip and decided to throw out another contest.  Winner gets some V8TV stuff in the mail.


RULES:

Guess the AVERAGE miles per gallon fuel economy we achieved in our '62 Ford over the 2800 mile road trip.

You MUST guess to 2 decimal places (Ex: 29.97 MPG) to qualify.   Post your guess in this forum thread below.

DETAILS:

The car is a 4500 pound brick going down the road, powered by an electronic fuel injected 351 Windsor V8 engine.   It probably makes around 390 HP at the crank.   The transmission is an overdrive 4-speed automatic with a 3.73:1 rear gear.       

A description can be found at 2:14 in this video...

<embed type="application/x-shockwave-flash" src="http://www.youtube.com/v/Vaa4moEe8EY" width="425px" height="350px" AllowScriptAccess="never" allowFullScreen="true" quality="high" wmode="transparent" /><noembed><a href="http://www.youtube.com/v/Vaa4moEe8EY" target="_blank">http://www.youtube.com/v/Vaa4moEe8EY</a>

Contest ends when someone guesses correctly!   Good luck!



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Eric Shafor
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« Reply #1 on: May 21, 2010, 09:55:27 AM »

20.23 mpg.
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CanAmChris
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« Reply #2 on: May 21, 2010, 10:54:22 AM »

21.25 MPG
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Chris Burch
 

 
1977 Can Am - Work in Progress
Roy
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« Reply #3 on: May 22, 2010, 02:19:24 PM »

18.35 mpg
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zombie1969
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« Reply #4 on: May 24, 2010, 07:44:13 AM »

17.80
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the_goon
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« Reply #5 on: May 24, 2010, 05:50:19 PM »

15.97
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1972 Chevelle
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1964 Ford Galaxie XL 500  289


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Alain V.
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« Reply #6 on: May 24, 2010, 06:44:52 PM »

15.51
this sort of reminds me of "the price is right".  We just need a vid of Kevin holding one of those skinny microphones. Cheesy
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maliblue65
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« Reply #7 on: May 25, 2010, 10:39:48 AM »

14.57
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Kevin O
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« Reply #8 on: May 25, 2010, 01:40:04 PM »

WELL... one of these guesses is VERY close!   We'll let this go a few more days and see if anyone comes closer!

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72tunaboat
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« Reply #9 on: May 30, 2010, 08:02:17 AM »

18.51
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bikeguy1965
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« Reply #10 on: May 30, 2010, 04:22:09 PM »

17.50 mpg.......
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newguy
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« Reply #11 on: May 30, 2010, 05:33:51 PM »

20.57 mpg
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Steve Firebird
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« Reply #12 on: May 30, 2010, 07:04:47 PM »

16.75
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clai9
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« Reply #13 on: June 01, 2010, 04:35:51 PM »

17.24 mpg
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Kevin O
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« Reply #14 on: June 02, 2010, 08:24:07 AM »

OK, here's the actual data from our road trip...
Road Trip Gas Entries, 1962 Galaxie

__ Date Odometer Reading Gallons (US) $/Gal Total
1 May 18, 2010 80,991.4 mi 11.122 $ 2.629 $ 29.24
2 May 18, 2010 80,804.4 mi 14.325 $ 2.719 $ 38.95
3 May 18, 2010 80,560.4 mi 9.662 $ 2.689 $ 25.98
4 May 17, 2010 80,386.2 mi 12.229 $ 2.799 $ 34.23
5 May 17, 2010 80,162.1 mi 13.598 $ 2.699 $ 36.70
6 May 16, 2010 79,966 mi 12.597 $ 2.699 $ 34.00
7 May 16, 2010 79,766.8 mi 12.424 $ 3.139 $ 39.00
8 May 15, 2010 79,537 mi 10.553 $ 3.149 $ 33.23
9 May 14, 2010 79,354.9 mi 13.562 $ 2.959 $ 40.13
10 May 13, 2010 79,128.3 mi 10.114 $ 3.159 $ 31.95
11 May 12, 2010 79,012 mi 14.188 $ 2.999 $ 42.55
12 May 10, 2010 78,847.8 mi 5.973 $ 3.059 $ 18.27
13 May 10, 2010 78,845.8 mi 6.069 $ 3.299 $ 20.02
14 May 9, 2010 78,715.3 mi 7.695 $ 3.249 $ 25.00
15 May 9, 2010 78,540.6 mi 8.177 $ 2.819 $ 23.05
__ Fuel Economy: Total Volume: Avg Price: Total Cost:
__ 15.90 MPG 162.288 Gal $ 2.910/Gal $ 472.30

Here's the story...

Our '62 is managed by a Ford EEC-IV ECM, and we're running a TwEECer tuning device which allows for 4 programmable tunes switchable at any time, and the pass-through which runs the tune that's factory programmed into the ECM.    We mistakenly had the TwEECer box set to the stock tune for the first part of the trip... a tune designed for a stock 5.0 Mustang.    This car is very far from a stock 5.0 Mustang.    The resulting economy was between 9 - 12 MPG as the computer tried to dump more fuel into the system to make the O2 sensors read that the car was in tune based on 5.0 engine parameters.     When we switched to one of the programmable tunes that we did for this car matching the parameters of the car - larger displacement, bigger injectors, intake tuned with correct MAF values, etc.. - the fuel economy jumped to 18.9 MPG!   Not bad for a 4600 lb. brick going down the road.   

Interestingly, the economy jump occurred in Utah, while we were running 85 octane high-altitude fuel and climbing mountains.     This car is only about 9.5:1 compression with aluminum heads, so it will run on anything.

SO... it looks like our winner is THE GOON with a guess of 15.97 for this trip!

The car is now hovering in the 18 range, but that's not what it got on the road trip, so 15.90 MPG is the official road trip economy.    Kind of a bummer, but an interesting experiment.    I know there is better economy in it... need to do more tuning with the wideband 02 sensor box when we get time.
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