When I came back from Sears Point this week end or went to Monterey yesterday I got what I always get ... 8 mpg
. It is the same when I had the 66 Holman Moody 427 MR SO or the replacement over square genesis block 490 side oiler hooked up to the Tremac 5 spd with the 0.68 over drive 5th and 3.54 rear gears...