8 cylinder 454 4l80 transmission when I bought this truck last year speedometer read 134k but was broke I put this one it says 275 works except tripometer does not so I'm going to say it's TRUE mileage is unknown could be half million truck runs and drives almost perfect zero to sixty right now its quick it's not an ss but will smoke one zero rust on this truck from its arizona history has a few dents nothing bigger than a baseball interior is shot its 28 years old needs a redo power windows cruise tilt ac is all there does not blow cold I never checked it tires were new in june 2 019 this truck was in phoenix arizona until I bought it the owner drove to buffalo parked it until I bought it so no snow or bad weather for this one you could drive this truck anywhere right now and not that bad on gas its located in buffalo ny you can come see it feel free to ask any questions the vin number is 1gcgc24nome164932