|
My c-code NA 6.2liter diesel 2wd 1989 suburban with 2.8 rear and a 5 speed shift was flirting with 30mpg at 50mph before all the lines and tanks rusted through.
Besides a stick shift, running a little lean and old 1970’s airplane gears there isn’t much to do beyond a basic tuneup, properly sized and rated tires and possibly some very basic aero mods there is likely not anything dramatic
To do with old iron.
|