Re: [Chevelle-list] BIg Block Gas Mileage

[John W. Lonadier, Jr.]

Title: Message

Larry, the last time I checked it I was getting around 15 on the highway. Mine is a mild 454 with stock heads, I haven't replaced them yet with the heads I had done with the 2.19 & 1.88 valves. The cam I am running is single pattern hydraulic .515 lift @ 272 adv. duration, stock intake, 750 Edelbrock Quadrajet carb, TH400 trans, 3.31 12 bolt posi. and 27 inch tall tires.   I plan on changing out the heads, and putting in roller tip rockers and leaving everything else the same. I don't know what the MPG's will be, but I'll bet it will get worse because I will be sticking my foot in it maybe a little more so the mileage will possibly be down. :-)   John L. ACES #5597 70 LS5 TRIBUTE http://chevellfan.com/index89.html http://www.larueclassics.com/gallery/gallery%20pages/lodanier-chv70.html -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Shouse Sent: Tuesday, February 28, 2006 8:00 AM To: Chevelle List Subject: [Chevelle-list] BIg Block Gas Mileage I know there are many factors that influence the number, but I'm curious what kind of gas mileage everybody is getting in their big blocks.   In my case, I have a .030 over 396 with roller parts, 870 CFM Holley Street Avenger carb, 4 speed and a 373 rear end. Any guesses? 8? 10? 12?   Larry Shouse