Hello Kyle,
I find it really hard to find the numbers Tony is talking about due to dirt and rust. I never did find them on my 77 Camaro rear end even after hitting with the cup brush and wiping it down with solvent. To get a rough idea of what the gear ratio is simply jack up the rear end and turn the drive shaft over a couple of times counting the number of turns the wheels makes.
Top speed for your truck is 80 Km/H on the highway, 50 Km/H in the city unless otherwise posted!
