Sorry guys, it's a fact (and sorry for the thread hijack!). Repeatedly measured full tanks going up and down CA and Denmark/Sweden. Speed usually 65-80 mph on TomTom GPS also supplying driven distance.
JW Performance C4 (1:1 3rd), 3.70 9" rearend with TrueTrac, 295/30R18 Kumho tires
351W built by Joe Beghosian (Fresno, CA, ex Indycar engine builder), SVO block, forged everything, FRPP X303 hyd. roller cam (specs
http://www.google.com/url?sa=t&ct=r...z9R7VkFtEOZNew4WQ&sig2=9YtcpXr1W4hSBmt9DU9Pbg), roller rockers, Edelbrock RPM heads, JE pistons @ 10.5:1, dual plane FRPP intake, 750DP also built by Beghosian. 91 octane (US octane rating that is).
Hooker ceramic Super Comp headers into dual 2½" exhaust w H-pipe & Magnaflows
Curb weight 3600 lbs with ½ tank of gas & me.
Temps in the 60-85°F range. Comes out at around 7,5 km per liter every time = 17.64 miles per US gallon
(
Online Conversion - Fuel Consumption Conversion). But i agree, it doesn't take a lot of sprints or overtakings to ruin it!
I very rarely measure city mileage but around 9 mpg usually. Gas is more than $9 per gallon here so I dont go pedal to the metal all the time!
The carb guys here told me to get a new gauge when they saw the 10-11 psi so this is the second gauge showing it. I'm not a carb guy so you can tell me a lot about why it shouldn't work - I'm just thrilled about the way it does!