Engine configuration:
361 cube oval racing small block Chevy geared and tuned to run up to 7600 rpms - Dart Aluminum heads with straight plugs - 55cc combustion chambers - cam with 256 deg intake and 264 degree exhaust at .05 lift. - the flat top pistons and chambers are configured to maximize...
I've done considerable tinkering with a 99 GM 6.5 turbo diesel automatic suburban trying to improve mileage. The starting mileage was 18.5 to 19 mpg at 70 miles per hour with the air cond. on. I keep the tires at 55 lbs. The best I can get with some changes is 22.5 mpg. Would an intercooler...
