Get it in tune and the lock up working the mileage shouldn't bad at all. No not mileage rear gear but with the overdrive ratio of .696 it makes for a final drive ratio of 2.24 just like having a 2.24 rear when you are on the highway. So when things are right 20 mpg hwy should not be out of the way.
105 mph with a decent 60 foot should net you a 12 second slip. Back in the day when I first turned up the boost & fuel in my GN I ran some 13.4s and a guy borrowed me some soft compound recaps. (About the time the first drag radial hit the scene) anyway she ran 12.7s at 107. It was box stock suspension gbody.
105 mph with a decent 60 foot should net you a 12 second slip. Back in the day when I first turned up the boost & fuel in my GN I ran some 13.4s and a guy borrowed me some soft compound recaps. (About the time the first drag radial hit the scene) anyway she ran 12.7s at 107. It was box stock suspension gbody.