I run a 0.60 over 261 cu.in. 6cyl., with a howards m4f cam and fenton headers,duals all the way to the rear bumper. A holley/weber carb from Langdons, 390 rear gear 255/70-15 rear tires.Turns about 2600-2800 rpm at 60 mph. all day long. gets 18 mpg on the highway @60. Been driving it like that for 5yrs.
