The 1964 292 had a pretty decent net torque line...from around 1600 out to around 24~2500 so I'd be inclined to stay down in the 1800 to 2000 rpm range for highway driving with the best gas mileage. However, that wasn't known as a high efficiency engine. It was said about the 292 they could pass nearly anything...except a gas station.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end