Quote:

This thread seems to be losing a bit of focus. It also fails to mention the goals and what car it's intended for.

All else equal, 318 will surpass a 400 in mileage.

Also, I'm not buying the deeper gear might get better mileage. May for the 5 to 10 seconds it takes to accelerate from a light but once you are at a constant speed. Lower rpm equals better mileage.



You have a point, but the truth is that it certainly IS possible to get as good or better mileage AROUND TOWN with a lower gearset. The increased torque multiplication for acceleration from a stop can overshadow the steady-state rpm based fuel consumption. A lower rpm equals better mileage on the highway.....but around town that doesn't necessarily hold true.

Dave

1970 Super Bee 440 Six Pack 1974 'Cuda 2008 Ram 3500 Diesel 2006 Ram 3500 Diesel 2004.5 Ram 2500 Diesel 2003 Ram 3500 Diesel 2006 Durango Limited [url] http://1970superbee.piczo.com [/url]