Hi 71 , my buddy has a 70 challenger with a 440 , 4 speed , Dana with 4.10s . Rear tires are 255-60-15 or G60-15 . Spins exactly 4,000 RPM at 70 mph . He gets passed by ricer cars and mini vans and HATES driving it on the highway !
If he would install a 5 or 6 speed overdrive he would be doing the passing and love it.
He gets passed by ricer cars and mini vans and HATES driving it on the highway ! 